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- USA
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Ships within 48 hours · Estimated delivery Sep 7 - Sep 12
Reserve from the case
Ships within 48 hours · Estimated delivery Sep 7 - Sep 12
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$ 45.00
US$ 140.00
US$ 70.00
US$ 45.00
US$ 27.00
US$ 54.00
US$ 20.00
US$ 189.00
US$ 120.00
US$ 54.00
US$ 140.00
US$ 54.00
US$ 150.00
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