Lithium Tantalate Faceted Stones, Sparkly Tantalia Loose Gems beryl These crystals had growth defects

These crystals had growth defects and atmospheric contamination

labgrown material sourced from an old Soviet-era collection

These stones are still very beautiful though

Note these stones glow blue under shortwave UV (especially 222 nm) because of titanium contamination

as well as the densest gem material you can get

Lithium Tantalate Faceted Stones, Sparkly Tantalia Loose Gems beryl These crystals had growth defectsThese are lab created white lithium tantalate gems. Lithium tantalate (LiTaO3) is an old rarity of the gem world and 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 an obvious difference when cut. Faceted lithium tantalate gems give off brilliant rainbows of color, so it's an amazing gem