These very pretty earrings are contemporary. They are fashioned from platinum and 18k white gold on the front and the clip backs are 14k white gold. Each earring is set with a small diamond of about 8 to 10 pts. The earrings are stamped on the back PT900 and K18, there is also a chinese character. The earring backs are stamped 14k. Each earring measures 7/8 x 5/8 of an inch. The clip backs are very comfortable and are in fact adjustable. They look like screw backs but that is the adjustable feature, they are clip backs. The earrings are light weight and very comfortable to wear, they weigh 10.7 grams total.