NWT - Madewell Rose Quartz Heartlove Stud Earrings 💕statement studs: chubby heart earrings made of rose quartz (a semiprecious pink stone said to represent l-u-v). •8 mm x 2 mm. •Gold-plated brass, rose quartz. •Sterling silver posts are naturally soft due to the high silver content (just bend 'em back into shape if they get out of whack). Nickel-safe. Clean your jewelry after each wearing with a soft cloth.