Stone size: 2.5cm x 1.8cm x approx. 0.7cm thick Braided cord length: 42.5cm The clasp is a crystal with a diameter of 8mm. This is a pendant made with a refined-colored natural Imperial Jasper stone. A deep red cord, like wine red, was hand-braided with a crystal clasp. You don't have to worry about metal allergies, and I think the deep red color is a nice accent. If you are purchasing as a gift, we will provide free wrapping, so please let us know via the transaction message. Thank you very much.