Azurite beads - malachite between 4 and 8mm - 8mm

Azurite - malachite beads. Color: Dark blue and green. Sizes: Between 4 and 8mm Country of origin: Congo GEMMOLOGICAL INFORMATION ON AZURITE - MALACHITE: Namely: It can be found under the contraction azurmalachite. Possible color: Blue and green Density: Between 3.70 and 3.95 Hardness: Between 3.5 and 4 Crystal System: Monoclinic Fracture: Conchoidal Cleavage: Perfect Different countries where perhaps extracted azurite - malachite: Africa (Congo) EXISTING TREATMENTS TO MODIFY AZURITE - MALACHITE: - Dye - Heater