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but this material was grown purely for use in the gem trade
These are facet rough of lab created strontium titanate
These were grown for use in high end optics and as a substrate to grow bespoke computer chips on
in industry Czochralski-pulled cobalt spinel can be grown to ultra high purities and used in lasers as a Q switch
1x CutKit™2
Fantasy Cut Laser Alexandrite Stones, Lab Created Red Glow Alexandrite Cut and Size:Oval, 17.5x13.5mm, ~14.2ct but this material was grownThese laser alexandrites are fantasy cut with some concave facets. They also have bubble inclusions typical of some lab grown alexandrite the concave facets make them much less visible. These are genuine, lab created alexandrite gems faceted from crystals grown for lasers. Note the camera can't capture the true color! There is a red glow to these stones thanks to their strong fluorescence but it doesn't dominate like it does in the photos. These gems
US$ 13.00
US$ 29.98
US$ 24.95