THREE NATURAL JADEITE RING SURFACES. Biggest Jadeite only size 19.5 mm by 14.2 mm by 4.8 mm. Smallest one 14.8 mm by 12.1 mm by 4.7 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.