Variscite beads between 6 and 10mm - 8mm

Variscite beads. Green color Sizes between 6 and 10mm Country of origin: United States (Utah) Treatment: Contains colorless oil and resin residues which are present in small fractures of the stone. The oil and the resin are intended to make the stone more resistant. GEMMOLOGICAL INFORMATION ON VARISCITE: Possible color: Green - yellowish, green - blue, light blue, green light to dark green Density: Between 2.4 and 2.6 Hardness: Between 4 and 5 Crystal System: Orthorombic | Variscite: dimorphic with Metavariscite Fracture: Conchoidal Cleavage: Perfect Polariscope: Usually Microcrystallized: Constantly restores / Opaque: Does not restore (because unobservable) / Rare crystals: Anisotropic: Resets every 90° Refractive index: np: 1.550 to 1.563 / Nm: 1.565 to 1.584 / Ng: 1.570 to 1.594 Birefringence: Between -0.010 to -0.031 Spectrum: Absorption from Violet to Blue, Line in the Red around 688 nm and Weak and wide band centered around 650 nm Different countries where variscite may be extracted: Bolivia, Australia, Austria, Germany, United States (Utah),... VARISCITIS CAN BE CONFUSED WITH: - Chalcedony - Amazonite - Serpentine - Jade - Aventurine