36 Multi-Gemstone Necklace in 14K Yellow Gold.  This modern multi-gemstone necklace features a colorful selection of gems on a 14 karat yellow gold necklace. From soft blue aquamarine to fiery red garnet, this necklace includes a rainbow of gems that is a daring feast for the eyes. A collection of earthy gemstones with cosmic charm, this 36” necklace is waiting to be yours.