Silver White Freshwater Pearl Stud Earrings - 7mmPearl Stud Earrings These stud earrings feature 7mm white freshwater pearls, secured on classic sterling silver fittings. Each pearl is cultivated inside a mussel's shell in the freshwater environments of rivers and lakes, a process that gives them their natural, white appearance. The sterling silver setting provides a durable and bright foundation, chosen for its composition of 92. 5% pure silver.