These birthstone ring charms are Ariel Gordon's "tiny but mighty way to honor your loved ones, BFFs, anniversary, mama, or pet." How adorable is that? 14k yellow gold Available in.04ctw diamond, or.04ctw pink tourmaline, or.04ctw peridot, or.04ctw aquamarine Charm measures 8mm in diameter Stone measures 2mm wide Sold as single or on chain