Long Old Mine Cushion in TGG Lab Garnet 16.5ct Weight and Cut:Long Old Mine Cushion Cut TGG This is a D20 I

This is a D20 I faceted from white sapphire

Used in lasers

These are faceted orange GGG

It is clearly doped with Erbium

Long Old Mine Cushion in TGG Lab Garnet 16.5ct Weight and Cut:Long Old Mine Cushion Cut TGG This is a D20 IThis is a long old mine cushion which I cut in TGG, modeled after Taylor Swift's engagement ring stone. It weighs in at 16. 5ct and measures 15. 5x10. 2mm. Note TGG is not completely colorless with a very slight tan hue this color can get stronger when exposed to UV and then go back down with exposure to normal light. TGG is a very cool synthetic material. It has the same structure as a natural garnet, but has a composition that would never be