Goldplated hoops with aventurine & gold hanger. Our natural gemstones are scientifically investigated by a mineralogist at the Dutch Gemstone Laboratories in Naturalis. We want to be sure we offer you real quality gemstones and we can tell you exactly what materials your natural stone collection is made of! This means the item is made out of pure natural stone and has not been altered or colored, apart from grinding and polishing. This is the purest possible form of natural stone. The hoops are goldplated 24k, high quality. Allergy free. Lenght hanger: approx. 1cm.