Men’s lava stone and galvanized hematite bracelet

Stone(s): lava stone and galvanized hematite Wire type: durable elastic cord Wrist size: 20 cm Color: black and metallic gray Weight: 15.6 g Photos not contractual Stone diameter: approx. 6.5 mm Stone cut: cabochon Shape: square Classification: Onyx: quartzite group – Lava stone: igneous rocks – Hematite: hematite group Mohs hardness: Lava stone: 5 to 5.5 – Hematite: 5.5-6.5 Density: Lava stone: 1.2 T/m³ – Hematite: 4.9-5.3 Origin: Lava stone: all countries with volcanic activity Hematite: Brazil, U.S.A, Spain, England, Germany Care instructions: Lava stone and hematite are not fragile. No specific maintenance required. However, to preserve the elastic, avoid putting the bracelet under water.