Friendly Studs – solid 14K Gold. Friendly Collection is inspired by the love of rock climbing, mountains and the outdoors. A great symbol of Friendship, Trust and Safety . The piece measures about 10×7 mm (0.47×0.27 inches) Worn by many Friends! Climb on – on rock, ice, in life and work! These studs give back! When you purchase 925 Catrine Linder you’re giving back to keep the arctic ocean clean. Every year we give a percentage to WWF Norge so they ca keep up the good work. Enjoy good conscious shopping!