Zirconium - Element number on the periodic table: 40 - Sister metal to Titanium but, when heat treated, forms a luxurious, silky smooth, black oxide layer. Black Zirconium rings are excellent as wedding or dress rings and striking when portions of the ring are remachined revealing the natural colour to contrast with the black oxide. Can be inlaid with precious metals as an option. View and drool ! :-)
