WOW. This is a truly GORGEOUS GEMSTONE! This genuine Labradorite briolette is one of the most breathtaking gems I have ever laid eyes on. There is nothing but STUNNING blue flash and fire from every angle! An absolute beauty. The gorgeous, smooth 13mm gemstone is set in a Sterling Silver bezel with an open back and measures nearly 3/4 inch, including the loop. It dangles delicately from a beautiful and sparkly 18 inch Sterling Silver chain. GORGEOUS!!!