These small stud hoops are made of 925 sterling silver and are coated with 1 micron 14K yellow gold plating. They are also available in silver . Materials : 925 sterling silver + 14K yellow gold plating Dimensions : 12 x 1,5 mm > PLATED JEWELRY CARE To maintain the golden color on your gold plated jewelry, we advise you to take it off when showering, swimming, sleeping or before working out. Avoid exposure to moisture, by storing them in a small airtight ziploc-style bag. Apply and let dry your perfume or any other beauty products (hairspray, moisturizer etc.) before putting on your gold plated jewelry. Although our one micron thick platings are stronger than the majority of gold fashion jewelry, it still needs to be taken care of! Absolutely avoid polishing them with a polishing cloth as this will damage the plating.