Sparkly Zincite Gem 6.1ct czochralski Lumenite™ is a monocrystal of

Lumenite™ is a monocrystal of strontium aluminate

Unfortunately I missed out on all of that on account of being born that year

following the movement of the sapphire melt during crysatllization

Warm LEDs (yellow)

which is over four times that of diamond

Sparkly Zincite Gem 6.1ct czochralski Lumenite™ is a monocrystal ofThis is a zincite crystal that I faceted. It weighs in at 6. 1ct. These crystals grew unintentionally in a Polish zinc refinery smokestack which was demolished in the 70s. It is also filled with sparkly zinc crystals. These unfortunately also cause unavoidable scratching in the final polish but they also add a rainbow sheen when viewed from the right angle. The stone also has some minor chipping.