Cartier's Trinity Ring in size 3 1/2--- it can be worn as a pinky ring, unless you have petite fingers. It says Cartier inside the ring. Designed in 1924 by Louis Cartier, it has three intertwined moving rings. It currently sells at Cartier for $1,700. It belonged to my grandmother, and was left to me. It's in perfect shape. It's a combination of white gold, rose gold, and yellow gold.