Our Gold Unity Necklace is composed of 18 karat yellow gold overlay, and features an interlocking circle and square charm. Charms are 1/2 inch long and hang on a 20 inch chain with a lobster claw clasp, with a 3 inch extender. This necklace comes in a light pink organza pouch and is 100% hypoallergenic. Great for layering with chains, or other dainty pieces!