Egyptian Bracelet, Silver&Lapis lazuli

Lapis lazuli, or lapis for short, is a deep-blue metamorphic rock used as a semi-precious stone that has been prized since antiquity for its intense color. Wikipedia Color: Blue Luster: Greasy, Vitreous Crystal system: Cubic crystal system Chemical formula: (Na,Ca)₈Al₆Si₆O₂₄ (S,SO)₄ Hardness (Mohs hardness scale): 5 – 5.5 Transparency: Opaque Silver 90% Nikel Free Bought in Cairo Egypt last summer