Amethyst / Purple quartz

Chemical formula: Silica (silicon dioxide, SiO2)

Amethyst is a purple variety of quartz often used as an ornament
Amethyst - nicknamed the 'Bishop's Stone". Strengthen immune system, removing impurities in blood.

紫水晶
平衡體能智能，廣結人緣，加強記憶開發靈性，治失眠並除惡夢，象徵濃厚的感情。