Disclaimer: I have no knowledge about this item. Looks like old trade/tourist goods made in China. I obtained about 57 of them in a storage locker auction. I have not had it professionally tested so I don’t know if any are possibly jade. Not translucent. Cold to the touch. Through hole in the middle of piece. Curved. Measurements 1/2” tall x 4” round. 8.1 oz / 229 grams.