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- USA
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- USA
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Ships within 48 hours · Estimated delivery Oct 24 - Oct 29
Reserve from the case
Ships within 48 hours · Estimated delivery Oct 24 - Oct 29
682 Birefringence: 0
- Heating blue tanzanite to improve its color
Chalcedony beads
Gemological information about chalcedony:
Nombre de perles en 10mm: 36
Apatite bleue 20 Forme indéfinie 682 Birefringence: 0Apatite cabochon. Color: Blue Shape: Round Size: 34. 90mm diameter Weight in grams: 21. 88g Carat weight: 109. 40 carat Country of origin: Madagascar Gemological information about apatite: Possible color: Colorless, yellow, green, blue, purple, pink Density: between 3. 16 and 3. 28 Hardness: 5 Crystal system: Hexagonal Fracture: Subconchoidal, uneven Cleavage: Imperfect Polariscope: Anisotropic (restores all 90, except in the optical axis) Refractive
US$ 15.00
US$ 56.00
US$ 54.90
US$ 49.90
US$ 69.90
US$ 10.00
US$ 35.00
US$ 34.90
US$ 59.90
US$ 39.90
US$ 17.90
US$ 25.00
US$ 75.00
US$ 54.90
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