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These are facet rough of lab created strontium titanate
availabl on deep discount while remaining supplies last
excellent optical properties and little to no trouble in cutting or polishing
synthetic alexandrite
These are lab created golden laser garnet aka Ce+Nd YAG (Yttrium Aluminum Garnet) facet rough
Faceted Er-Nd Soviet Laser Garnets, Calibrated Color Change (Orange-Pink) YAG Gemstones Stone:Square, 9mm, avg ~5.8ct These are facet rough ofThese are faceted stones of an unusual experimental laser garnet from the Soviet union, codoped with Erbium and (likely) neodymium. The base color ranges from orange pink to purple pink, and they color change from more orange to more pink depending on the light source. This is a new material for us from an old collection, a 40 year old failed experimental laser garnet from the Soviet Union. It is clearly doped with Erbium, and like our modern pure Er:
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