... 20mm diameter 4) OEM & ODM orders welcome Alloy Rhinestone Button (BT069) details: ProductAlloy Rhinestone ButtonItem NoBT099MaterialsRhinestone, ... Zinc alloy,PlatingMeasurement 20mm (any size is available) Stone ... crystal ,jet ,diamond ,siam, fuchsia, tapaz ,blue zircon,aquamarin,sapphire,montana,peridot..Plating ColorGold (sliver,gold,rhodium, ...