Artisan Crafted Unique .925 Sterling Silver Moldavite Cabochon Ring Size 7.25. One STUNNING ring!! This one has taken me a month of Sunday's to research! It has been tested up one side and down the other! It IS sterling silver, stamped and tested. It is NOT Emerald, glass, or Jade! Tested! I won't go through the whole listed of others it is not.....the conclusion by my jeweler is......Moldavite! So dark green it almost appears black. In fact, I bought it at a local auction as onyx.....until I got it in my light and saw that it was green. It has very light lines near the bottom and super tiny dots or bubbles that I can see near the bottom of sides. The top is very clear. It is one gorgeous ring....even better in person! Size 7 1/4. Measures approximately 15mm x 20mm on top, and the shank is a delicate 1.2mm, and perfectly round. Pre-owned, but in excellent condition!