Two main parts of the intervertebral discs are the outer ring (annulus fibrosus) and the inner gelatinous material. (nucleus pulposus). The outer ring consists of fibrocartilage, while the inner material shows many similarities to the articular hyaline cartilage both in its biochemical and histological appearance.
For this reason, Everything Wedding Rings recommends avoiding black tungsten wedding bands-with one exception. Titanium Kay has recently launched a new tungsten carbide wedding ring design with solid black inlay that is 100% scratch proof. So, if you are looking for a tungsten ring with black inlay features I highly recommend one of the Titanium Kay 2nd Generation rings.
Tungsten Carbide Jewelry. Tungsten carbide is one of the coolest metals on the jewelry market, special in tungsten rings, mens tungsten rings and mens tungsten wedding bands. Because this is relatively new and most popular metal to be used in men's jewelry. Tungsten carbide rings and jewelry are made from the material tungsten carbide that is created from an alloy of 85.7% elemental tungsten and 14.3% carbon alloyed with other metals - TC.857 (TC.857 Regared as European Union Standard).