Faceted Blue Spinel Gemstones, Soviet Gem

Faceted Blue Spinel Gemstones, Soviet GemThese 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

so it can very accurately report pressure without any physical connection to the outside

They've been faceted and set in solid sterling silver jewelry

Ruby is the most classic laser crystal

In addition to the main chip it got a couple more at open sauce

dispersion of 0

easily matching and exceeding any other green gem I have seen in color (and I don't say that lightly

While Nd YAG is one of the most classic laser materials and has been widely used for numerous applications since the 60s the formula has been tinkered with over the years to optimize it even further

Though the LANCE is absolutely incredible (we got to see it in person and meet the head crystal grower

The fluorescence really is crazy--even normal room lights will make a LuAG gem fluoresce

These pieces may have cracks or bubbles and may also show light pink coloration

with rhodium plating to help keep the contrast sharp

It measures 38mm in diameter and 53mm long and weighs in at 153g