Inspired by double bypass style, this tanzanite ring is full of fashion and style. Tanzanite is a blue-violet variety of the mineral zoisite and is a thousand times rarer than diamonds. This enchanting ring features oval and pear shaped tanzanite with colorful hues. Set in a designer frame of 925 sterling silver with platinum plating, the fascinating charm of this jewelry piece will make you sparkle for the right reason. The gem is considered December's birthstone and a traditional gift for 24th anniversary.