Tiny but mighty. Add our new birthstone studs to your ear stack. September babes, these rich Blue Sapphires are for you. Best worn with dainty drop earrings or statement hoops. The perfect excuse to amp up your everyday look (or get more piercings). 18k gold plated 100% recycled sterling silver Two, 3mm Round Lab Grown Blue Sapphire Gemstones Earring are 4x4mm Sold as a pair