Faceted Blue Spinel Gemstones, Soviet Gem Stone:Marquise, 13.5x8mm, 4.95ct cyberpunk friend or of course

cyberpunk friend or of course for yourself

These latter stones visibly shift as you turn them around giving vivid paraiva-like colors

with a faceted LuAG Lumogarnet on the front

which didn't quite meet spec

also known as yttrium orthovanadate

Faceted Blue Spinel Gemstones, Soviet Gem Stone:Marquise, 13.5x8mm, 4.95ct cyberpunk friend or of courseThese are blue gems cut from old stock flame fusion spinel grown in the Soviet Union, sourced from an old collection The color intensity and darkness varies considerably from stone to stone, each is photographed individually. Blue Spinel is typically colored by cobalt, which gives it a red fluorescence with strengh varying based on cobalt concentration and codopant types. While this material is grown with the flame fusion method, in industry