Beautiful hand set blue spinel stud earrings, 4mm in size. Sterling silver settings with 5mm medium weight ear nuts. Gorgeous ocean blue gemstones, these are the birthstone for December. Perfect for everyday wear... note: these are lab created gemstones. lab created gemstones are chemically identical to their natural counterparts, without any of the inclusions or flaws... these are flawless, timeless, and beautiful... enjoy !