Faceted Blue Spinel Gemstones, Soviet Gem Stone:Marquise, 13.5x8mm, 4.95ct The camera overstates the red

The camera overstates the red vs the eye and struggles to capture the green

which didn't quite meet spec

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

These are Christmas garnet earrings and pendants set in solid sterling silver

The 81g piece measures 37x30x28mm and the 86g piece measures 38x30x29mm

Faceted Blue Spinel Gemstones, Soviet Gem Stone:Marquise, 13.5x8mm, 4.95ct The camera overstates the redThese 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