Treat yourself or someone special! This never-worn pendant is beautiful! Product details from Macy's: A dramatic showstopper! A big and bold slab of onyx is cut and polished to a perfect circle then hand-faceted to a mesmerizing brilliance. A delicate frame of genuine marcasite in sterling silver perfectly showcases this impressive opaque pendant. Onyx: 28 x 5mm Marcasite stones Set in sterling silver 925 stamp. Chain not included.