Rubies at the Bangkok Gem Show
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- เผยแพร่เมื่อ 1 มิ.ย. 2024
- Nick Hodgson of Astrogems.com interviews Navratan Manihar of Manihar International Co Ltd at the Bangkok Gem & Jewelry Show about the prolific supply of heat treated Ruby which is very different from natural but used extensively in the conventional jewelry industry.
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A good gemologist will tell the difference when the rubies are glass filled. But instruments are needed. This was a wonderful video thanks for putting it up astrogems.
you are the best so far in teaching us faceters about the differances that we can only guess. please do more. this was great learning video.
Most of them are not filled with glass.In the last 10 years heat treaters in Thailand have learned they can enhance the very low grade material having a "lot of cracks" by way of using Low Temperature Glass Formulas ( melting at around 900 degrees celsius) and they effectively fill in the cracks and make the matertial look "Much" better.
It can be applied to any corundum but mostly to the Mozambique material because 90 % needs to be treated with glass or it looks awfull.
thanks Richard Gere
kir 😂😂😂😂😂 I was thinking the same thing
99% of rubies sold in India and Asia is glass filled and heated. They should not be priced more than 1 to 2$ per carat but due to Industry knowledge so poor and still the base material being natural ruby corundum, this people get certificate called Natural Ruby with heating. So much of glass inside already and so much of color done and also the honest guy says they polish too. What is left is everything but ruby. 1$ per carat is fine but 10-18$ is just rip off.
sandeep mehta Exactly
You are right, people who treats the gemstones are actually wasting them
99% would abit too much to say that Asia has the glass filled or heated rubies. I have a vast collection of Natural untreated Rubies of Afghanistan, sold and tested by the clients from the Gia. So there still exist some beautiful natural rubies in Afghanistan, Asia not always show people the dark side. Thanks. Peace
Thank you very much for this. It's very helpful to know the wholesale prices of treated rubies so we can allow for a mark up price for retailers, but not too high that we're being robbed :)
Wonderful explanations! Beautiful gems. Thank you so much.
i have gems
Hlo if you wanna buy stones so i have somestones i can sell you
Continued: Before the lower temperature glass filling evolved many Rubies ( mostly Burmese ) where treated with higher temperature glass formulas such as Silica / Borax. It depends on the temperatures the corundum can handle before any negative reactions occur from the heat.
The low grade Mozambique material reacts poorly to higher temperatures but lower temps with low melting temp. glass formulas work great.
Some Corundum can have a bad reaction to heat at as low as 300 degrees Celcius
He should know as it has been common practice to heat the corundum for going on 30 years now.
Thanks
Beautiful Gems👍😊
Haritha do you wanna buy stones tell me😞
Beautiful gems!
Depends on what you mean by "real." The Gemological Institute of America calls glass-filled rubies a "Manufactured Product." In a sense the rubies are not "real" because they are usually filled up to or more than 50% with glass, but they still are real because their original composition is Al2O3 or aluminum oxide (aka Corundum). They are all real but most are treated to make them look prettier to the buyer.
I think the pale yellow sapphires are far more attractive than the citrine looking darker ones. I'm also grateful that the leaded glass filled rubies put beautiful stones within my price range. The dealers I buy from disclose this. A shopper can pick out a stone that has the least surface reaching cracks to minimize the glass content. Since the luster is different between the ruby and the filling material when the stone is tilted and examined under magnification, one can still get a decent ruby.
Thank you for info
That Indian guy there is certified gem stones dealer..
Very interesting info brainstorming i love..
15$/ct and you’re trying to say these are real rubies heated? I’d like to know how much glass you put in those...
colas rooftop
80% glass
Many of these gems comes from the Chantaburi/Pailin, Cambodia regions.
Homlh l
Awesome
Fantastic, my gem dealer did not tell me that the ruby he sells could be heated or glass filled i guess he was not informed etc. Its important to buy from a professional who travels the world i guess. I think i may have bought a lemon.
Very beautiful stone
The process of heating gems has been common for decades.
Most sources of rubies are heat treated anyhow, at least 90 percent because they need to be heated or they do not look so good, or ugly looking actually.
There is about 5% of the Mozambique that is left unheated and about another 10 % that is heated without any chemical additives and the rest needs the glass filling to improve the looks,making a major difference.
The price is so cheap and that is the give a way.You should ask to have the stone tested anyhow if the seller says it is not treated
happyharv🇧🇹
Beautiful ring. Beautiful braclet.. Ugly untrimmed finger nail
I have a cousin who loves rubys
This gems, aren't just for showing
Good information.
Good Job 👍
Good lord how do you go about heat treating stone at 1700 C?
A few years ago I was holding a ruby found by a dealer from Sri Lanka for Mr. Graff. The size of the stone was 5.5 carats, the price - $ 2.500.000! Here you can believe that it is unheated and without glass...
hello i have gems
I have a question. Are the glittering type red stones ruby?
I have a problem in that how would you know if you are buying glass filled gems like this or even Swarovski crystals?
But I also have to ask myself why do I care if it looks the same or better than a natural gemstone and it costs so much less?
Okay, thanks for the info.
hello im from Macedonia and i have a ruby but they are not in working form.Please i want you to explane me how we can work on them and who can do that.thank you
wow Great....
WOW 🤩
Wow, one has to really know their gems. So many scams. Sourcing is important when not near the actual gem fields or mines. Thank you for the lesson!
How is the difference between heated Nad unheated ruby ?
so this porocess decreases the hardness?
Nice info
ruby USD 10 per carat ? i guess it probably heated mixed with glasses right ?
Rachmad Igen did you even watch the video
You clearly did not watch the video
hello
i have gems i'm ir gems from srilanka
good
Uau 🌎😎🌎
Ruby 99 % heat treatment if come from Mozambique .
No
Can anyone tell me where and how to buy ruby in chanthaburi, ???
Super
Visit the gem of Bangkok
Hy Do you wanna buy stones tell me please😊
manttaaaaaaaapppppp.........
Watching in 2020
I hav such type of ruby but I'm not sure is it real Ruby or fake!
ရှာပါတွင်ထွက်ရတနာမျာလှပဝင်လက်တောက်ပနေသောသင်တို၏အရောင်မျိုးစုံအရောင်ဆိုင်ပြခန်မှဗီဒီယိုအင်တာဗျူးကိုမျဝေပေးလိုက်သည်
👍
Most of the time all you need is a microscope with a power greater than 10x. Whether it be handheld or tabletop, you can easily view traces of lead glass filling by seeing gas bubbles and other inclusions not normally found in ruby. You don't need to be an expert (:
Can you deliver through parcel
I do love emerald but too expensive. I only can affort bought green tourmaline ring...
Doris Sanggau buy natural emerald from gemsearth.com
Or whatsapp us on +918881481444
Show the stone Garnet
Tourmaline is cool too, it's not treated in any way. I am going to get a Rubelite for that reason.
Richard Gere's twin brother
May I know what is the name of this ruby company?
0066819100231 call me
We are looking for good facetor in or near newyork city
you are so fuuking right omg there is no such thing as rubys!!!
I will never buy any type of corundum crystals again.
Vincent P
Every type of treatment have its market. It all depend on how much you are willing to pay for. Rich are willing to pay 10 of hundred thousand for a good ruby and others willing to pay just a couple of hundred for a treated ruby to show off!
i have gems www.irgemsjewelry.com
Aduuh Pening Kepala liat batu tuh heheh
Oskadon obatnya
how can we puchase it from another country ?
iam a cutter i have it i can cut also 55 28 999321146 mr carlos from brazil
I'm interested in buying plesse e-mail me. . jenjen8791@gmail.com
i have all gems do you want
This is glass filled ruby. Little better than artificial
အာရတယ်ကျောက်တွေကြည်ရတာဝမ်းသာစရာကောင်ပါသည်ရောင်စုံရတနာတွေတနေရာထဲမှာအများဆုံးအားေပေးလို့ရနိုင်အောင်ရှိးကြီးကိုကျေးဋူတင်ပါသည်
got emerald 5 CT bought it 25 years ago $1700"
Must be a real emerald from which mine. Brazil or Columbia or Ethiopia
hi i need to get some rubys
i have gem www.irgemsjewelry.com
do you want
I WOULD NOT PURCHASE THIS MATERIAL FOR 25 CENTS PER CARAT. THE GLASS FILLING MATERIAL IS NOT STABLE.
lol just corundum and sand heated in an oven is not a ruby lol
😇😇😇😇😇😇
Unheated for $11/ct? lol This is all glass filled junk. At the moment you can't even dream of buying a quality unheated 1ct Ruby below $800/ct.
Paul Reinhard my 6ct untreated unheated ruby cost my husband 65,000 and that was only because he was a friend of our family.
Rising Pheonix i know i knew it was my father who sold it my husband he gave him a discount as a wedding gift.
lol
6 carat cost 65000 Dollars？？？？So expensive............I am a jeweler in Shenzhen China, perennial gem business in Thailand.
If you watched the video you'd see no excuses were made for the quality or price. He explicitly states from the beginning that they are both heat treated and glass filled. Are you daft?
are they real gems? real rubys?
Niko Evcil definitely nope, the host was so kind didn't tell in front these sellers, but you can tell the prices.
ชมค่ะ
They are fucking rubies with heat
So the idiot who buys the 'unheated' ruby for his woman...has to follow her around all her life reminding her that it's a unheated one. Bwahahaha
A gem businessman would like to know
i have gems www.irgemsjewelry.com
I belong from pakistan and i want to purchase Bule sphare of Bankoko
Come to Karachi has lots of Sapphire for you
ائی ایم فیورٹ جیمس ڈون روپی
Any heated Gems cannot use for astrology purposes.
i have gemstone
I have tirmulin stone Allah made on stone
Can you send me a picture
N
I wouldnt buy treated in anyway as it has no resale value
HERE IS PAINITE th-cam.com/video/rtcilnsILzw/w-d-xo.html
heated loss their color a year or 2, nice learning! natural also somewhat dull in color! ugly look somewhat
Whats the point of filming yourself, repeating everything that man says!? Instead of seeing all the gems, we see the side of your head. Instead of dowing the rubies, we see you! What a disppointment!
Good lord how do you go about heat treating stone at 1700 C?
You put it in an oven that is designed to operate at that temperature.
In order to really know the heating technology you have to visit or meet local Thai who deals in Ruby or Sapphire rough. Heating and processed take time and done in ranch type area