Malachite stone, 18.15 carats

Technical details: Type: Malachite (Malachite) weight: 18.15 carats dimensions (mm): 18.00x13.00x6.00 shape: Cabochon (Cabochon) color: Green clarity: Impure transparency: Opaque hardness: 3.5-4.0 treatment: Untreated origin: Unknown certification: Certificate from the Saudi Laboratory (MT) - website (www.mtgl.com.sa) Malachite is a copper carbonate mineral, known for its distinctive bright green color, ranging from light green to very dark green. It is often characterized by striped or concentric patterns of different shades of green, and is an opaque stone with a silky or glassy luster. Malachite typically forms in oxidation zones and copper mineral deposits.