THREE NATURAL JADEITE RING SURFACES. Biggest Jadeite only size 14.6 mm by 8.5 mm by 3 mm. Smallest one 11.8 mm by 6 mm by 3 mm. Guarantee Natural Jadeite. GIA certificate is available upon buyer's request and cost. If fail to acquire GIA certificate, Consignor guarantee to refund. From a Hong Kong jewelry dealer.