Moonstone Small Disc Round Necklace - Genuine white rainbow moonstone gemstone pendant on 14k gold filled minimalist chain - Gifts for her Stone: Genuine Rainbow Moonstone Pendant: 12mm Diameter Pendant: 3mm thickness Bezel: Vermeil Gold (14k gold over sterling silver) Chain: 14k Gold Filled Chain: 1.3mm Cable Chain Chain: Adjustable from 16 to 18 inches About "Gold Filled Jewelry": Also called rolled-gold. These jewelry items are not actually filled with gold. They are made of a base metal covered by sheets of gold in a mechanical bonding process. Effectively a thick coat of gold: the industry standard for the gold content is 5% or 1/20 of the total weight.