Perles en lapis-lazuli, forme carré Étoile For some between 1

For some between 1

Zambia Amethyst can be confused with: - Glass - Synthetic quartz - Cracked quartz - Irradiated synthetic quartz - Irradiated synthetic ametrine - Purple scapolite - Cordierite - Fluorite - Kunzite - Spinel - Doublet email - Garnet / glass doublet Treatments that exist to modify amethysts: - Colorant

Carat weight: 43

- Quartz fumé

Hardness: between 3 and 4

Perles en lapis-lazuli, forme carré Étoile For some between 1Lapis lazuli beads. Color: Ultramarine blue, white veins (calcite), pyrite inclusions, black traces Size: 10 x 10mm Shape: Flat square Country of origin: Afghanistan Number of pearls per row: 30 Gemological information about lapis lazuli: Possible color: Ultramarine blue, white veins (calcite), pyrite inclusions, black traces Density: between 2. 37 and 2. 95 Hardness: 5. 5 Crystal system: Cubic Breakage: Irregular Cleavage: Perfect Polariscope: Opaque