An 8mm square octagonal and 3mm round green onyx 18K yellow gold over sterling silver necklace measuring approximately 0.41 inches wide with lobster claw clasp and 2-inch extender - the green onyx station necklace where two stone shapes create visual variety along the warm gold chain. The larger square octagonal stones provide primary color presence; the smaller round stones create transitions. Deep consistent green onyx in warm gold. Lobster claw with 2-inch extender.