Bold Bamboo Initial Necklace. Each letter measures approximately 1 1/2 inches long and 1 inch wide. Every necklace comes with an 18 inch gold overlay snake chain with a two inch extender and a lobster-claw clasp. Necklace is crafted in 18 karat yellow gold overlay and is 100% hypoallergenic. It comes packaged in a light pink organza pouch.