Measures approx. 3/4" X 1/2" at its widest, and is not marked, but tests as coin silver, 900 silver. Please note some damage to the turquoise, but it was found and used that way! Ring needs polishing but thats up to the buyer. Thanks and please check out all photos! Launched from my store - Powered by Highwire.coma;06d2,RcmdId ViewItemDescV4,RlogId p4%60bo7%60jtb9%3Fuk.rp73%28%3Ea%3B06d2-14ee3a9e6fe-0x10b-->