#heat treatment

No reserve price - 1 pcs Green Sapphire - 1.87 ct - International Colored Gemstone Association (ICA GemLab) - Standard Heat Treatment

No reserve price - 1 pcs Green Sapphire - 1.87 ct - International Colored Gemstone Association (ICA GemLab) - Standard Heat Treatment

#colored gemstone #corundum #gem certification #gemstone #green sapphire #hardness #heat treatment #ica gemlab #Jewelry

1 pcs Blue Tanzanite - 15.89 ct - Antwerp Laboratory for Gemstone Testing (ALGT)

1 pcs Blue Tanzanite - 15.89 ct - Antwerp Laboratory for Gemstone Testing (ALGT)

#algt certified #blue gemstone #colored gemstones #heat treatment #pleochroism #rare gemstones #tanzania gems #tanzanite

Sapphire - 1.42 ct - Instituto Gemólogico Español (IGE) - Leftovers Reheated Without Waste

Sapphire - 1.42 ct - Instituto Gemólogico Español (IGE) - Leftovers Reheated Without Waste

#blue sapphire #corundum #gem certification #gem enhancement #gemstone #heat treatment #ige #Jewelry #precious gemstone #sapphire

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