material:natural pyrite
quantity:12pcs
size:approx.20-30mm
shape: see the picture,then note 
color:rainbow 
sku:PY019

note:have more color and size 4-6mm,6-8mm,8-10mm,10-14mm,12-16mm,15-25mm,25-35mm,30-50mm
also have larger stock and can offert wholesale price.