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Ships within 48 hours · Estimated delivery Nov 8 - Nov 13
50 carat Country of origin: Afghanistan Gemological information about serpentine:
Philippine
52 carat Country of origin: India Gemological information on microcline: Please note: It is part of the feldspa family
Treatments that exist to modify common blue opal:
Dimensions approximatives: 40
Perles en spinelle noir entre 4 et 8mm Ovale 50 carat Country of origin:Spinel beads. Color: Black Sizes between 4 and 8mm Country of origin: Thailand Gemological information on spinel: Possible color: Black, blue, pink, red, purple, green, yellow, orange Density: 2. 65 Hardness: 7 Crystal system: Cubic Fracture: Conchoidal Cleavage: None Polariscope: Anisotropic (restores all 90, except in the optical axis) Refractive index: n0: 1. 538 to 1. 544 ne: 1. 547 to 1. 553 Birefringence: 0. 009 Chelsea Filter: Inert to reddish
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