18K, Diamond and Sapphire Halo Set, Marked "750" on posts of earring and clasp of necklace, halo design with center oval sapphires and round diamonds surrounding. Earrings measure approx. 9.8 mm x 8 mm and are without backings, the chain is 17 3/4" and 1.5mm link size with center pendant that is removable. Diamonds appear bright and clean, approx. total weight is 7 grams.