@@moderngoldsmith I seem to remember purple gold is brittle I wonder if you could cast a thin ring shape from the purple and then machine it to tightly fit it to a more formable gold body to protect and trap it a bit like you did here and then engrave/facet it just a bit to draw attention to that deep metallic hue next to a pale metal like brushed white gold.
My wife was a modelist in the lost wax process and she made us a model of wedding band that was poured in green 18k gold. I notice people doing double takes when noticing my "green" wedding band. Your presentation was very informative, I am now one of your follower.
I used to work in a medical parts manufacturer company. I helped build the first fully automated titanium anodizing line in the US. We worked on the recipes for a year and a half. When I left the company, the chemist I worked with gave me samples of the titanium in every color we perfected. That was nearly 20 years ago and I still have the tube with the blanks with me. I loved my work, but I hated the company. It went out of business six months after I left because it was 2009 and they couldn't run a hot dog stand much less a multi million dollar medical implants factory.
@@Tugela60 lol, no. The company was bought by a company that made RV parts and wanted to diversify. Unfortunately medical parts are way more important to keep within spec than a water pump. They kept trying to rush parts through inspection and were sending unacceptable product to our customers, so our customers stopped ordering from us and the shop closed by the end of the year.
The green gold would make lovely vine and leaf accents for rose gold florals. Keep the stronger gold for the structure. It would stand out well in that situation, visual comparison and subtle suggestion.
I had a friend who was an internationally qualified geologist who also designed and made charms and jewellery. He is, unfortunately, long gone. I saw a piece that he made for his lady. It was a small pendant in the shape of a many petalled rosebud the leaves on the stem were green gold whilst the petals were rose gold with stem being of pure gold. To complete the piece he placed a "dew drop" of a small diamond on the edge of the inner edge of the bud. It was a delicate piece valuable in itself but valued especially by the lady involved as it had been designed and made especially for her with love.
I had a Black Hills Gold ring that had a green gold and red gold leaf on it. I had to sell it many years ago to pay off some debts, gone but not forgotten.
Blue gold is an intermetallic similar to purple gold (AuAl2) but is instead either an intermetallic of gold and indium (AuIn2) or gallium (AuGa2). It's a structural color like purple gold so will show when the material is properly heat treated.
the way i have been taught, when alloying with zinc always add it right at the end, give it a quick stir and pour immediately, otherwise the zinc burns off and the alloy balance shifts off
Ahhhh electrum. I made a few simple bands and solder for them out of this a few years ago. It really does look greenish next to rose gold. The alloy is super soft though so I found a hammer finish works best on simple rings.
This brought back memories of my years as a casting jeweler. My favorite color for Electrum (Green gold) is 18K (.751). It’s beautiful. BTW, never use any copper in Electrum. It fades the green. Also, add the zinc last to the mix since it oxidizes quickly.
I was inspired by your knot ring video to make my first soldered piece and of course what better tribute to a Celtic piece than green gold so it happens that’s what I made mine with! So cool to see the process. Thank you for inspiring hobbyists and people just interested in knowing more. Your channel sure is fun and makes the process more accessible. Of course yours is prettier but I sure had fun making mine! Thank you sir.
That was an incredibly well done video. More than a video; it was an experience👏🏻 You don't put out videos often, but when you do...very high quality. Thank you 💚
Unpopular opinion: I think the 16K green gold looks better than the 18K. The 16K looks more green and less yellow to my eyes. That being said, both are beautiful and would make fantastic jewelry 😁 Next purple or blue gold, please 🙏
@@moderngoldsmith Is Cadmium really that bad when alloyed with Gold? Itself it’s relatively inert and gold only makes it more inert. As long as the parts of the ring that touch the skin don’t have Cd, you could use the super-green gold for making small decorations like leaves. Old “Spring Green Gold” recipes look like: 71% Gold 22% Silver 5% Nickel 2% Cadmium
You could also try making some less common colors like champagne gold, brown gold etc. I remember reading someone mixing in iron in the gold alloy but i don’t know what color
That's very cool, love the subtle variations. A lot of oil painters miss using cadmium yellow - it's a very "true" color. A way to play up the green would be via contrasting it with a complimentary reddish tone like rose gold or a pink gemstone but that is a specific "look."
NileRed did this and it was REALLY difficult. Purple gold is super brittle and highly reactive with atmospheric gases, so you need to melt it in an argon atmosphere and bubble the argon through it to remove the hydrogen gas.
From 1977 through 1985, Royal Canadian Mint Commemorative $100 coins had a composition of 91.67% gold + 8.33% silver. These had the appearance of green gold.
You have to be careful when using zinc in an alloy, because the boiling point of zinc is lower than the melting point of the other metals. The way you did it here, there is a good chance you had a lot of zinc in the air and little to none in the alloy. It is better to melt everything else first, then only add zinc at the end and quickly cool it back down.
Girl go to the craft store ect and just start making art is relaxing I draw , Kona like a kid , it’s not gonna be hung in a museum but it’s pretty relaxing . Just get sone beats it watever spend donpices iver time if you are short on time
Great video, I was always interested in how the cadmium alloy looks compared to the regular one. You could make that gold alloy color triangle to show all the possible combos. I also wonder if it’s possible to make blue gold that is not too brittle for a ring
I'd love to see that green gold inlay in white gold. Or even purple gold. Nile Red made purple gold. It was beautiful. I love the green gold too, very beautiful and unique.
So cool! I’d love to see your take on the beige gold that Chanel uses in some of their jewelry. I love the look of gold jewelry but it looks terrible on my skintone so I’ve always stuck to silver/platinum. But I feel like the beige gold would totally suit me.
Have you heard of blue gold and black gold? Yes it's a thing. Maybe try one of them or both at once 👍 I really like the look of making Rings. I also love gold that I find like in my profile picture 💯👌💚💛❤️
4:48 the thing is gold is yellow like but not really yellow. I know this is not a specific color on the spectrum but gold looks "gold-colored" and it makes the gold, silver copper & zink alloy look like a real yellow color in comparison and not at all green
There are a lot of metals that you can heat treat to turn into different colours, I'm sure you can heat treat a gold alloy into appearing green or even blue and other colours
Love this, I always wanted one of those puzzle rings, you know the four interlocking rings, but each ring is a different metal. Yellow Gold, Rose Gold, Silver, and this Green Gold(electrum?) would be great.
I love green gold!!! 😊 If you mix a tiny bit of metallic cadmium you get extreme greens. Just watched. Good video!!! Worked as a jeweler for a long time. I've seen cadmium green gold that was MUCH greener.
this was a very fun video! if I may make a little request, I think it would be really really cool to have a side by side of different white gold recipes!!!
Try making violet gold by alloying with aluminum, or blue gold by alloying with indium. Even crazier make auride salts by alloying with alkali metals ❤
The gold alloy with iron gives it much deeper green colour, but it has similar drawbacks as purple gold - its brittle and can't be cold forge. However maybe some small, casted ornaments will work?
Any colored gold with its corresponding gem stones would be epic. [as there are a plethora of green gems, there are many to pick from] Same using some purple gem with purple gold.
That ring looks so good!!! I never knew green gold was a thing, but now that I do, I want some. 😆 Subscribed. Awesome video and amazing ring! Nice job!
My mother got some jewellery made from yellow and green gold in Iran in the 1960s. She was told they use some cobalt in the alloy but I have no idea how much exactly. When we visited Iran in 2015, it was out of fashion but still could be found after some asking around in the gold soukh (market) in Teheran.
As ive learned in melting metals u should have melted the gold first then added the other metals afterwards from highest melting point to lowest so as not to burn off the other metals b4 the gold melts
You’re not wrong, but from my understanding “electrum” specifically refers to when gold and silver are found naturally together in the earth, not alloyed together. Hence green gold is a more appropriate title for what I did.
There is a way to achieve bright leaf green gold you're just not going to be able to manufacture it outside of someplace like JPL or a laboratory setting. It requires refractive ion beam etching. It creates a nanoscale surface finish that is similar to a holographic effect that can be tailored to favor 500 to 565nm green emissions.
Green and pink gold is why I loved Black Hills pieces in the 90s. I have a few pieces from my teen years, including my high school class ring! I chose the fanciest one in the book, I'm sure! 😂 it is beautiful, though.
"Cadmium (Cd) additions of up to 4wt% have also been used for the production of 18 carat green alloys. 75Au-23Cu-2Cd results in a light green alloy, and 75Au-15Ag-6Cu-4Cd is the composition of a dark green alloy"
Beautiful ring! Think that I might need to switch over to gold smithing. No other metal has the same appeal. I just started silver smithing to create jewelry from opals that I cut/polish. Probably, cheaper to learn the basics with silver.
You could have also used a chrome and nickel blend. They're not as toxic and are used in jewelry anyway. To help bring out the greenish hues you'll need to use either sodium or potassium carbonate. These are both safe to handle and do not produce toxic fumes. The reason for the carbonates is the oxygen. Chromium Oxide has a really nice true green color. Edit: the sodium carbonate and potassium carbonate are used in place of flux. Use as little as possible. You'll be able to see when the reaction is complete.
My favorite gold is rose gold. Just how pink can you get that? I'd love to get a breast cancer ribbon pendant with rose gold, but they're never pink enough lol
I'm glad you addressed the elephant in the room when it comes to green gold, it really only is green to goldsmiths who spend too much time looking at a very thin range of yellow-white lol. I can't help but wonder if microstructural patterns in a gold alloy could produce a "magic" green, much like our purple gold.
The tools I used to make this video: www.benchclass.com/greengoldlist
Hey bro, I've heard about the 18k _blue gold_ that is 3/4 gold and 1/4 iron (Fe) .
Wonder if you're interested to try it out.
Great channel btw ✌️😊
7:40 is there a was to oxidize copper very evenly ? And then use a little bit of resin?
How much?
Now do purple gold!
ight blue and red next it is possible
You should react to Nilesred Purple Gold Video, I’d love to get your opinion on his process
Love that video! I definitely need to try my hand at purple gold...
Please do just that 👍
@@moderngoldsmith I seem to remember purple gold is brittle I wonder if you could cast a thin ring shape from the purple and then machine it to tightly fit it to a more formable gold body to protect and trap it a bit like you did here and then engrave/facet it just a bit to draw attention to that deep metallic hue next to a pale metal like brushed white gold.
It was a great video.
Purple gold is really cool
My wife was a modelist in the lost wax process and she made us a model of wedding band that was poured in green 18k gold. I notice people doing double takes when noticing my "green" wedding band. Your presentation was very informative, I am now one of your follower.
I used to work in a medical parts manufacturer company. I helped build the first fully automated titanium anodizing line in the US. We worked on the recipes for a year and a half. When I left the company, the chemist I worked with gave me samples of the titanium in every color we perfected. That was nearly 20 years ago and I still have the tube with the blanks with me. I loved my work, but I hated the company. It went out of business six months after I left because it was 2009 and they couldn't run a hot dog stand much less a multi million dollar medical implants factory.
Do you have photos you can link? I'd be really interested
I'd love to see that.
You drove them out of business?
@@Tugela60 lol, no. The company was bought by a company that made RV parts and wanted to diversify. Unfortunately medical parts are way more important to keep within spec than a water pump. They kept trying to rush parts through inspection and were sending unacceptable product to our customers, so our customers stopped ordering from us and the shop closed by the end of the year.
@@JessieJussMessy I have never been able to link photos in TH-cam.
The green gold would make lovely vine and leaf accents for rose gold florals. Keep the stronger gold for the structure. It would stand out well in that situation, visual comparison and subtle suggestion.
sounds wonderful!
I had a friend who was an internationally qualified geologist who also designed and made charms and jewellery.
He is, unfortunately, long gone.
I saw a piece that he made for his lady.
It was a small pendant in the shape of a many petalled rosebud the leaves on the stem were green gold whilst the petals were rose gold with stem being of pure gold. To complete the piece he placed a "dew drop" of a small diamond on the edge of the inner edge of the bud.
It was a delicate piece valuable in itself but valued especially by the lady involved as it had been designed and made especially for her with love.
I had a Black Hills Gold ring that had a green gold and red gold leaf on it. I had to sell it many years ago to pay off some debts, gone but not forgotten.
That should read " gemologist". I hate autocorrect!
@@jimkendall7522You can edit comments
Blue gold is an intermetallic similar to purple gold (AuAl2) but is instead either an intermetallic of gold and indium (AuIn2) or gallium (AuGa2). It's a structural color like purple gold so will show when the material is properly heat treated.
*googling intensifies*
the way i have been taught, when alloying with zinc always add it right at the end, give it a quick stir and pour immediately, otherwise the zinc burns off and the alloy balance shifts off
Black gold, purple gold , red gold , pink gold , blue gold ,any gold colour that is possible please
🫡🫡🫡
Ultraviolet gold. ;)
Nile red has purple gold instructions ⚗️🧙♂️
@@moderngoldsmithradioactive gold
gold gold? rose gold?
Ahhhh electrum. I made a few simple bands and solder for them out of this a few years ago. It really does look greenish next to rose gold. The alloy is super soft though so I found a hammer finish works best on simple rings.
When using zinc you should melt the other metals first then add the zinc.
This brought back memories of my years as a casting jeweler. My favorite color for Electrum (Green gold) is 18K (.751). It’s beautiful. BTW, never use any copper in Electrum. It fades the green. Also, add the zinc last to the mix since it oxidizes quickly.
I was inspired by your knot ring video to make my first soldered piece and of course what better tribute to a Celtic piece than green gold so it happens that’s what I made mine with! So cool to see the process. Thank you for inspiring hobbyists and people just interested in knowing more. Your channel sure is fun and makes the process more accessible. Of course yours is prettier but I sure had fun making mine! Thank you sir.
This makes me so happy. You’re welcome and please keep going!
Mind blown! Between the contrasting bands and then adding the engraving, absolutely incredible.
Level achieved❤👏
ahhh, thanks! You're the best
Percy would be pleased. He was right
I just wrote a comment quoting his infamous line, glad someone else here has top notch taste in British comedy classics. 😂♥️⚫🐍
That was an incredibly well done video.
More than a video; it was an experience👏🏻
You don't put out videos often, but when you do...very high quality.
Thank you 💚
Make a purple gold ring combined with this green color! I am sure the contrast of purple and green will be more vivid and expressive!
Fascinating video! I didn't know I needed green gold until now, it's such a pretty color. Would love to see other unconventional gold colors.
Beautiful result! I love how you explain the process and your camera work is great!
As a fellow jeweler, you really inspire me to be better!
Unpopular opinion: I think the 16K green gold looks better than the 18K. The 16K looks more green and less yellow to my eyes. That being said, both are beautiful and would make fantastic jewelry 😁
Next purple or blue gold, please 🙏
Not unpopular! My wife also preferred the 16k look, it’s minty!
@@moderngoldsmith "Mint Green Gold" You're sitting on a banger of a trademark there! AND it's a PUN!
@@moderngoldsmith
Is Cadmium really that bad when alloyed with Gold?
Itself it’s relatively inert and gold only makes it more inert.
As long as the parts of the ring that touch the skin don’t have Cd, you could use the super-green gold for making small decorations like leaves.
Old “Spring Green Gold” recipes look like:
71% Gold
22% Silver
5% Nickel
2% Cadmium
its also my fave color. i do like 18 with full copper too btw peachy rose. it does oxidize tho as copper is shitty metal :D
You could also try making some less common colors like champagne gold, brown gold etc. I remember reading someone mixing in iron in the gold alloy but i don’t know what color
Very interesting never seen green gold before
LOVE EVERYTHING ABOUT THIS VIDEO!!! The vintage pattern is beautiful!!!
*Modern Goldsmith* Bravo well done, thank-you sir for taking the time to bring us along. GOD Bless.
this is so cool! Reminds me of black hills gold, with all the neat colours
I had a whole section talking about black hills gold, but ultimately made the video a lot shorter.
I'm simple man, when I see Jordan posting a new video, I watch. Another great one, my friend! ❤
Loved this video!! It’s so fascinating to see the process from start to finish with all of its moving pieces👏🏼
That's very cool, love the subtle variations. A lot of oil painters miss using cadmium yellow - it's a very "true" color. A way to play up the green would be via contrasting it with a complimentary reddish tone like rose gold or a pink gemstone but that is a specific "look."
Black Hills gold jewelry has been producing a green gold variant since 1870.
Hi Jordan, Really grateful you created this video. A perfect circle. Thank you!
Did you if you mix gold with aluminum in a certain ratio you can make purple gold
Blue gold ?
NileRed did this and it was REALLY difficult. Purple gold is super brittle and highly reactive with atmospheric gases, so you need to melt it in an argon atmosphere and bubble the argon through it to remove the hydrogen gas.
@@RobbyRockaholic Indium and Gold
Very brittle mixture
From 1977 through 1985, Royal Canadian Mint Commemorative $100 coins had a composition of 91.67% gold + 8.33% silver. These had the appearance of green gold.
You have to be careful when using zinc in an alloy, because the boiling point of zinc is lower than the melting point of the other metals.
The way you did it here, there is a good chance you had a lot of zinc in the air and little to none in the alloy.
It is better to melt everything else first, then only add zinc at the end and quickly cool it back down.
Yes you are correct I shall do this in the future!
You make me miss making jewelry!!
Girl go to the craft store ect and just start making art is relaxing I draw , Kona like a kid , it’s not gonna be hung in a museum but it’s pretty relaxing . Just get sone beats it watever spend donpices iver time if you are short on time
Can you try to make blue gold 🥺🥺 I always wanted to see how difficult to make it!!! (I'm too excited)😅
I've made blue gold before. Yes it is not so easy as the other colors. Melting the iron for it takes a lot of heat
@@stewartabernathy6436 you 100% just looked that up
Nile red did purple gold
Who
@@Santi81-theOne one of the insane science creators who do really weird (but fun and neat) science experiments
Great video, I was always interested in how the cadmium alloy looks compared to the regular one. You could make that gold alloy color triangle to show all the possible combos. I also wonder if it’s possible to make blue gold that is not too brittle for a ring
Now I need to see something that combines Purple, Rose, Yellow, Green and White Gold together!
I'd love to see that green gold inlay in white gold. Or even purple gold. Nile Red made purple gold. It was beautiful. I love the green gold too, very beautiful and unique.
I would have loved to see you do the green gold against rose gold! The two contrasting colors would really make it an interesting sight
Thank you it was a great video , it was a life time question answered
So cool! I’d love to see your take on the beige gold that Chanel uses in some of their jewelry. I love the look of gold jewelry but it looks terrible on my skintone so I’ve always stuck to silver/platinum. But I feel like the beige gold would totally suit me.
I don't think I've seen that before, I'll definitely check it out!
@@moderngoldsmith it’s like a very soft rosy tone. More muted than typical rose gold but and not overly yellow.
Green gold here and purple with neil and we almost have all shades of gold nice !
Oh, Edmund... can it be true? That I hold here, in my mortal hand, a nugget of purest Green?
Came here for this
Love the visuals!
It's a beautiful colour - would like to see it next to rose gold, too...
from what i know about alloys you should be able to do gold titanium alloy and keep the properties of the titanium colour changing
Worth the wait everytime you create!
Have you tried mixing brown-black gold, that color is very beautiful.thank you
purple gold is the own you should try for sure
Have you heard of blue gold and black gold? Yes it's a thing. Maybe try one of them or both at once 👍 I really like the look of making Rings. I also love gold that I find like in my profile picture 💯👌💚💛❤️
Can you make an alloy of equal parts gold, silver and copper? It would be only 8k gold but still an interesting video idea
4:48 the thing is gold is yellow like but not really yellow. I know this is not a specific color on the spectrum but gold looks "gold-colored" and it makes the gold, silver copper & zink alloy look like a real yellow color in comparison and not at all green
There are a lot of metals that you can heat treat to turn into different colours, I'm sure you can heat treat a gold alloy into appearing green or even blue and other colours
Love this, I always wanted one of those puzzle rings, you know the four interlocking rings, but each ring is a different metal. Yellow Gold, Rose Gold, Silver, and this Green Gold(electrum?) would be great.
A nugget of purest green.
I love green gold!!! 😊 If you mix a tiny bit of metallic cadmium you get extreme greens. Just watched. Good video!!! Worked as a jeweler for a long time. I've seen cadmium green gold that was MUCH greener.
You know its a good day when he posts
Zinc also has a lower boiling point - that is a problem with making brass, the zinc evaporates as the copper melts…
this was a very fun video! if I may make a little request, I think it would be really really cool to have a side by side of different white gold recipes!!!
Interesting idea!
Very interesting! How about blue gold. I’ve read about it in old books but never seen it. 💙
Great suggestion!
can't wait a colorless gold soon....thank you
Try making violet gold by alloying with aluminum, or blue gold by alloying with indium. Even crazier make auride salts by alloying with alkali metals ❤
Thanks for the suggestion! Definitely want to try blue gold...
The gold alloy with iron gives it much deeper green colour, but it has similar drawbacks as purple gold - its brittle and can't be cold forge. However maybe some small, casted ornaments will work?
Any colored gold with its corresponding gem stones would be epic.
[as there are a plethora of green gems, there are many to pick from]
Same using some purple gem with purple gold.
very beautiful ring,,, it would make a wonderful promise ring...😍😍😍
Great clip! Thank you 🙏🏼 for your planetary story at melting point - really good idea 🫵🏽😎💫
That ring looks so good!!! I never knew green gold was a thing, but now that I do, I want some. 😆
Subscribed. Awesome video and amazing ring! Nice job!
Thanks so much! welcome :)
You could try blue with indium or black gold with cobalt. It would be interesting to see the properties of such gold
where did you get the ingot mold? It looks great.
My mother got some jewellery made from yellow and green gold in Iran in the 1960s. She was told they use some cobalt in the alloy but I have no idea how much exactly. When we visited Iran in 2015, it was out of fashion but still could be found after some asking around in the gold soukh (market) in Teheran.
As ive learned in melting metals u should have melted the gold first then added the other metals afterwards from highest melting point to lowest so as not to burn off the other metals b4 the gold melts
it's actually called Electrum when you mix gold and silver
You’re not wrong, but from my understanding “electrum” specifically refers to when gold and silver are found naturally together in the earth, not alloyed together. Hence green gold is a more appropriate title for what I did.
There is a way to achieve bright leaf green gold you're just not going to be able to manufacture it outside of someplace like JPL or a laboratory setting. It requires refractive ion beam etching. It creates a nanoscale surface finish that is similar to a holographic effect that can be tailored to favor 500 to 565nm green emissions.
Green and pink gold is why I loved Black Hills pieces in the 90s. I have a few pieces from my teen years, including my high school class ring! I chose the fanciest one in the book, I'm sure! 😂 it is beautiful, though.
Ohhhh Edmund, could it be?
"Cadmium (Cd) additions of up to 4wt% have also
been used for the production of 18 carat green alloys.
75Au-23Cu-2Cd results in a light green alloy, and
75Au-15Ag-6Cu-4Cd is the composition of a dark
green alloy"
My great grandfather use to make green gold. I remember he used cobalt in it. Aside from tht I don't remember much.
Interesting! Alloying is super fun
Blue gold would be an interesting alloy for you to make next.
Very beautiful video. What is rose gold? Is that adding more copper than silver into the mix?
I also wonder what would an alloy look like that is equal parts gold, silver and copper. And would it tarnish
the second bar you made could make a very impractical writing tool? maybe try drawing circuits with it and see if they work?
Beautiful ring! Think that I might need to switch over to gold smithing. No other metal has the same appeal.
I just started silver smithing to create jewelry from opals that I cut/polish. Probably, cheaper to learn the basics with silver.
Brown gold for your information; A Gold-Copper-Indium-Tin-Manganese Alloy which has a brown color, visually similar to that of Bronze.
Thank's BRO great job.
Such an interesting and well made video!
You could have also used a chrome and nickel blend.
They're not as toxic and are used in jewelry anyway.
To help bring out the greenish hues you'll need to use either sodium or potassium carbonate. These are both safe to handle and do not produce toxic fumes.
The reason for the carbonates is the oxygen. Chromium Oxide has a really nice true green color.
Edit: the sodium carbonate and potassium carbonate are used in place of flux. Use as little as possible. You'll be able to see when the reaction is complete.
Purple gold next please? 😊
Its already done
Aluminium and gold, makes purple gold
3:20 you should add zinc last we saw in the video as it burning evaporating away
Purple gold is nice!
PURPLE!! then all of the colors possible
Purple! I've been experimenting with it an it's hard to do!
Excellent video bro
My favorite gold is rose gold. Just how pink can you get that? I'd love to get a breast cancer ribbon pendant with rose gold, but they're never pink enough lol
Iridium colors gold alloys in different colors. This depends on the amount of iridium.
It’s such an awesome color!
Maybe it could be simulated by using coils that are allowed to make a patina?
I'm glad you addressed the elephant in the room when it comes to green gold, it really only is green to goldsmiths who spend too much time looking at a very thin range of yellow-white lol.
I can't help but wonder if microstructural patterns in a gold alloy could produce a "magic" green, much like our purple gold.
It's a lovely ring. Artificial Electrum.
I always found that green gold gets deeper over time.
interesting!
PURPLE AND GREEN!!!! :D (with purple ruby set into the green gold, and green emerald set in the purple gold) :D