Here is a Fine 18Kt Gem Tanzanite Diamond Anniversary Ring.  Made from Solid 18Kt White Gold and weighs 9.8 grams.  At the center you are looking at one Natural Gem Tanzanite that is a 1.25Ct Oval that is surrounded by 1.59Ct of Natural Baguette Diamonds that are H-I Color VS2 - SI2 Clarity.  Ring is currently a size 5 3/4 which can be sized for FREE Upon request , Hallmarked 18k , 1.59.  Ring is 14.6mm wide across the top.