20 Rhinestone Buttons Silver Round Pearl Crystal Hair Flower Comb Clip Wedding Invitation Scrapbooking Napkin Ring BT108 Free shipping for any additional items. US seller. Ship within one business day. Measurements (approx): 1/2" x 1/2" (12.5mm x 12.5mm) Materials: silver metal with A+ grade rhinestones and off white pearl Shape: round Buy with confidence. We are the biggest rhinestone product seller on Amazon providing over 2000 rhinestone products.