Orange Lithium Tantalate Facet Rough, Lab Created Gem of Science flux This would have likely been

This would have likely been grown by the Czochralski method--it is polished all around and only has minor chipping on the end faces

These are violet in normal light and turn pure colorless under fluorescent illumination

They are available in calibrated sizes and in fancy cuts

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 This would have likely beenThis 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