A A Quality Tanzanite and natural white Zircon Ring. This Stunning Tanzanite (7mm x 4mm) of .75ct. is a Brilliant Cut Oval gemstone with a double halo of natural white Zircon stones blending into a double twist details on the ring shank with more Zircon. Set in 18ct. Yellow Gold on 925 Sterling Silver. This Tanzanite is natural and not enhanced in any way and has that unique blue/pink hue only found in this gemstone. The wonderful sparkle that you get from Zircon (not to be confused with cubic zirconia, which is man made) really makes the central stone stand out and is truly lovely. Tanzanite is the birthstone for December (lucky you!) and the 24th Anniversary gemstone.