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I have also added two options for smaller 'starter' dice rough:
but we've been able to buy a few old collections that contained some of this material
with a faceted LuAG Lumogarnet on the front
These are Christmas garnet earrings and pendants set in solid sterling silver
triboelectric and photoelastic among other properties that make it indispensible for all kinds of scientific and industrial applications
Faceted Blue Spinel Gemstones, Soviet Gem Stone:Marquise, 13.5x8mm, 4.95ct I have also added twoThese 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