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specifically Bi3Ge4O12 aka evlitine) is valued as an optical substrate because of its highly unusual electrooptical properties
This is an incredible 1590ct egg faceted from industrial lab grown white sapphire
As an experimental and extremely difficult-to-grow material it comes at a high premium but I'm extremely glad we've had a chance to be involved--this is the most gorgeous material I've ever worked with
I cut this stone back in December
We tried a new technique for cubing these up with somewhat mixed results - they aren't perfect cubes
Turtle's Hoard LuAG T-shirt laser gem specifically Bi3Ge4O12 aka evlitine) isThis premium t shirt, brought to you by Turtle's Hoard, is all black, with a faceted LuAG Lumogarnet on the front. It's a great way to show that you're a fan of Gems of Science and of Turtle's Hoard. .: Made with medium fabric (5. 3 oz yd (180 g m)) consisting of 100% cotton for year round comfort that is sustainable and highly durable. .: The classic fit of this shirt ensures a comfy, relaxed wear while the crew neckline adds that neat, timeless look