Aaron Palke: "Unraveling the Causes of Color in Blue Spinels”
ฝัง
- เผยแพร่เมื่อ 7 ก.พ. 2025
- This video is from the Research Track of the 2018 GIA International Gemological Symposium. The Research Track presented the latest findings by Institute researchers and scientists respected across the industry and from around the world.
This presentation is part of the theme, Colored Stones and Pearls. Synthetic and treated colored stones and pearls are widely available. Although standard gem-testing equipment can be used to help identify these materials, the use of advanced scientific instrumentation is increasingly necessary. Country-of-origin determination for various species of colored stones requires documentation of visual, spectroscopic and compositional features, which are then compared to similar gem materials from a known geographic source. Presentations may include, but are not limited to, identifying natural, treated and synthetic colored stones, the characterization of colored stones from specific localities, and natural and cultured pearls.
To learn more about GIA, visit: www.gia.edu/
SUBSCRIBE TO OUR CHANNEL
/ officialgiachannel
FOLLOW US
Facebook: / gia4cs
Blog: 4csblog.gia.edu/
Twitter: / gianews
Pinterest: / giapins
Google Plus: plus.google.co...
What a lesson about cobalt spinel !
th-cam.com/video/BhLxvHqNMfE/w-d-xo.html
How are you boss i m from pakistan
Boss i have spinel
I want to show you
Seems that the resultant 'desirable' aesthetics determines what is a 'cobalt' spinel, rather than the specifics of composition. So a colour chart with the ratio would have been helpful.
How to get open colour to dark spinel?
Hello
How to identify whether the stones is natural or treated Co Spinel?
torch
@@gishanj1563 By torch, I'm thinking you mean UV light? Shortwave? Longwave? That would be a good session to watch.
i have a cobolt spinel. need to get a proper certificate, please give me more information. thanking you :)