I love that diesel color as it is called. Kijani tanzanite too. It has green zoning after heat. It is also my choosen birthstone. Thank you Justin. Things are starting to get back finally
This is what I was told; Heating of Tanzanite, quite simple. In a kiln, slowly bring the temperature up to 560 Centigrade, keep at this temperature for about 1 hour, and let slowly cool down.
Yeah I liked it a lot that way too. I had sort of a bubble gum color that was unique. It looked even better than in the video but alas the customer is always right.
Many people heat Tanzanite while in a preform state prior to cutting. Few do it on completely rough material because they want to remove any inclusions that might spread during heating. The clarity standard for Tanzanite in the market is completely eye clean in finished gems.
Great clip. Emerald cut is my all time fave. Will just any color of untreated tanzanite, e.g., goldens, greens, pinks, etc., turn purplish-blue with heat or just the ones with a brown axis? Is it true the heating quenches out the tertiary pinkish flashes? Has this been tried in a home oven? Woah!
@@LostWithoutHer I’m not totally sure about the heating. I know that each original color has a unique reaction to the heat and all of them will have slightly different results. No it’s not in a home oven. They make special gem ovens that are extremely consistent and well insulated and can go to high heat and have built in timers to step the heat up and down at certain times.
It’s my old machine, a Polymetric scintillator. No reason I used it other than I just wanted to see if I still remembered American style. I’m toying with the idea of doing some education videos aimed at the mast machine style.
I like extra challenge in my life 😜 Normally I don’t use the transfer block, I just put it back by eye. This time I used the transfer block because I was using an American machine, just to remember how that worked but was sort of combining my normal technique with the transfer block technique. No reason really other than to try different things.
We dont have any classes posted right now as we prepare our 2023 schedule but you can read about the class here: www.facetingapprentice.com/pages/facetingbootcamp
I notice that you are using what looks like an older mast style machine for this video. What machine is that? Have you switched? A fact that your viewers may find interesting is that the mineral Zoisite is trichroic (three colors on different axis). But after heating the gemstone Tanzanite is only Dichroic (two colors). The brown color is not heated to purple, it is burned away leaving only two colors.
Yes it’s a Polymetric scintillator from 1996. It was my original machine I moved to Thailand with. I just got it repaired and wanted to try it again so this tanzanite was my test :) And yes heating... so interesting!!! Trichroic stones are already weird and then cooking one color out is also weird 🤣
@@JustinKPrim Yes, heating is a black art, but very important in the industry today. So much is possible with today's technology. It is something I enjoy doing and experimenting with. The Scintillators are great machines, but somewhat fussy in ways.
I love that diesel color as it is called. Kijani tanzanite too. It has green zoning after heat. It is also my choosen birthstone. Thank you Justin.
Things are starting to get back finally
The color turns out very beautiful. Excellent Work.
Super Video
I hoped you were going to detail the heating process as well. I would be very interested in that
Sorry I wanted to but I wasn’t allowed to witness or film the heating process. Look in the video description for details on how to do it.
Stones heated to 1000 degrees Fahrenheit.
Nice, as usual.!
I am curious to see a firing schedule for heat treating. Unless there are added gases and pressure involved in the process.
This is what I was told; Heating of Tanzanite, quite simple. In a kiln, slowly bring the temperature up to 560 Centigrade, keep at this temperature for about 1 hour, and let slowly cool down.
Simple but astonishingly effective! Thanks
Beautifully cut. I prefer the stone before the heat treatment. Color play.
Yeah I liked it a lot that way too. I had sort of a bubble gum color that was unique. It looked even better than in the video but alas the customer is always right.
It's odd but nice seeing you cutting on a Mast-type machine.
Absolutely gorgeous. What if you were to heat the stone before it is cut?
Many people heat Tanzanite while in a preform state prior to cutting. Few do it on completely rough material because they want to remove any inclusions that might spread during heating. The clarity standard for Tanzanite in the market is completely eye clean in finished gems.
@@1bwana120 I couldn’t have said it better 🥲
Great clip. Emerald cut is my all time fave. Will just any color of untreated tanzanite, e.g., goldens, greens, pinks, etc., turn purplish-blue with heat or just the ones with a brown axis? Is it true the heating quenches out the tertiary pinkish flashes? Has this been tried in a home oven? Woah!
@@LostWithoutHer I’m not totally sure about the heating. I know that each original color has a unique reaction to the heat and all of them will have slightly different results. No it’s not in a home oven. They make special gem ovens that are extremely consistent and well insulated and can go to high heat and have built in timers to step the heat up and down at certain times.
What machine were you cutting with this time. Any reason you used a mast machine instead of the Sterling this time?
It’s my old machine, a Polymetric scintillator. No reason I used it other than I just wanted to see if I still remembered American style. I’m toying with the idea of doing some education videos aimed at the mast machine style.
Nice video, What is that glue you are using? I usually mix a resin together for dopping stones but that stuff you're using looks easier to manage.
We like Loctite 480. Very strong. Dries in 5 min. Acetone releases it. It’s very viscous though so that’s a challenge.
Wow Justin, this stone is gorgeous. Btw, who is the maker of this faceting machine?
It’s a Polymetric scintillator
@@JustinKPrim Thank you.
I have been looking for a Ultra-tec V2 faceting machine, but most of them are way more than I can spend.
Why did you remove the stone from the dop before transferring it? Wouldn't it be aligned better if you kept it on the dop while transferring it?
I like extra challenge in my life 😜 Normally I don’t use the transfer block, I just put it back by eye. This time I used the transfer block because I was using an American machine, just to remember how that worked but was sort of combining my normal technique with the transfer block technique. No reason really other than to try different things.
Good zab. Bro.👌👍👍salmam raju
From india
I have a big chunk of raw tanzanite, where can I get it cut and heated?
You can send it to us for cutting but I don’t have a connection for heating. No one that I know offers this as a service.
my great grand father emmaual DeSouza discovered tanzanite
How do I make it go from blue to light purple?
No idea. I didn’t do the heat treatment and don’t know anything about it.
where can i sell natural raw tanzanites
what machine are you using? Great skill sets on display🙂
Sterling st-08 from Sri Lanka
What machine or equipment did you use to heat the stone?
A stone heating oven of some sort. I didn’t get to see it so I’m not exactly sure.
Man that was cool. I hear you teach gem cutting. How do I sign up?
We dont have any classes posted right now as we prepare our 2023 schedule but you can read about the class here: www.facetingapprentice.com/pages/facetingbootcamp
@@JustinKPrim ok thanks for your info.
Please Tell me somebody were I can get stones? Do I have to trip to the lands were the Stones came from?
The Tucson show in late Jan/early Feb! Post covid. That’s the easiest place to buy rough.
What's this! ,,,,,Faceting with a mast machine ,,, the penalty for treason is having your wrists slapped! 😂
Heheh. I’m multi talented
I notice that you are using what looks like an older mast style machine for this video. What machine is that? Have you switched? A fact that your viewers may find interesting is that the mineral Zoisite is trichroic (three colors on different axis). But after heating the gemstone Tanzanite is only Dichroic (two colors). The brown color is not heated to purple, it is burned away leaving only two colors.
Yes it’s a Polymetric scintillator from 1996. It was my original machine I moved to Thailand with. I just got it repaired and wanted to try it again so this tanzanite was my test :)
And yes heating... so interesting!!! Trichroic stones are already weird and then cooking one color out is also weird 🤣
@@JustinKPrim Yes, heating is a black art, but very important in the industry today. So much is possible with today's technology. It is something I enjoy doing and experimenting with. The Scintillators are great machines, but somewhat fussy in ways.
What’s the price per kt for a stone like thay
Not sure
What state do you live in mate? me in Connecticut USA
I live in Thailand normally, but currently on an American roadtrip
What glue are you using?
Loctite 480. Dries in 10 min , almost never fails, however very runny.
I think we all wanted to see the actual heating process. Shame. opportunity lost.