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These crystals had growth defects
Colorless ZnS is grown for use for optics
it can be so strong that fluorescence is named after fluorite
They even show detailed structures under a microscope
hence the carvings
Long Old Mine Cushion Cut in Smoky Moissanite 8.9ct Marked Letter:Long Old Mine Cushion Cut These crystals had growth defectsThis is a long old mine cushion which I cut in smoky moissanite, modeled after Taylor Swift's engagement ring stone. It weighs in at 8. 9ct and measures 16. 4x11. 5mm. Note that this stone has some sparkly growth needles running down the length (hence why it couldn't be used for computer chips). This is moissanite, also known as silicon carbide. It is an excellent gem, with incredible hardness (around 9. 25 9. 5) and greater brilliance and fire than a
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