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but cobalt spinel has a hardness of 8 and is ideal for use in all times of jewelry
This is the first of our Literal™ solid gem rings
giving a cool eye effect under UV
We have both 6 inch diameter toppers which are placed on the master lap and 6 inch solid sintered laps
some of these pieces will have a few bubbles
Orange Lithium Tantalate Facet Rough, Lab Created Gem of Science flux but cobalt spinel has aThis is lab created yellow orange lithium tantalate facet rough. Each is labelled with its gram weight and letter in the photo and they can be purchased individually. This is lithium tantalate (LiTaO3), an old rarity of the gem world that is rarely seen today outside of industry. It was briefly used as a diamond simulant and marketed as 'tantalia', but was never very successful tantalate is much brighter and more dispersive than a diamond,so there was
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