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Common blue opal can be confused with:
97mm Weight in grams: 4
Magnesite can be confused with: - Howlite The treatments that exist to modify magnesites: - Colorant
Number of pearls on a row: 22
Ammonite 21 brun Common blue opal can beAmmonite cabochon. Color: Brown, white (translucent) Size: 32. 03 x 29. 98mm Weight in grams: 9. 47g Carat weight: 47. 37 carats Country of origin: India Gemological information about ammonite: Density: Between 2. 80 and 2. 95 Hardness: 4 Crystal system: Orthorhombic Cleavage: In many directions Polariscope: Anisotropic. Generally opaque, does not restore because unobservable. Spectrum: Indistinct
