Sold as a pair.  Complete with sterling silver butterfly backs. Dimensions : 10mm  Materials and Care: These are made of sterling silver with the option of 18ct gold coating. Only precious metals are used and they are hypoallergenic. They are tarnish resistant but please keep in a sealed plastic bag when not wearing.  Stamp: 925 SRS ( our brand initials for Silver Rain Silver).  Packaging: All our jewellery comes with our branded velvet bag so your item is ready to be gifted.    Production Metho Stacking Earrings, Earrings Stacking, Silver Packaging, Opal Stud Earrings, Stacked Earrings, Opal Earrings Stud, Opal Studs, Silver Butterfly, Opal Earrings