Good material. The full name of CK is CalvinKlein, which belongs to a fashionable international jewelry brand, so it belongs to high-end grade. This ring is expensive because of its good material. CK is a young and fashionable brand. Ck rings generally range from RMB 0/00 to RMB 3,000 to RMB 30,000 at the counter/KLOC. For example, the price of Justyou series is 3689 yuan, but the specific price is subject to the actual situation. CK is an international jewelry brand, especially popular with young people. It is characterized by minimalist style and super temperament.