Comfort Fit tungsten inlay ring style is made of jewelry grade tungsten carbide
that contains no cobalt. The ring has polished beveled edges and has
an inlay of beautiful laboratory grown blue/green opal.
the time of purchase, your ring is automatically registered with the most
comprehensive lifetime warranty in the industry. Besides covering manufacturing
defects of any kind for life, the warranty also covers accidental damage to the
ring. See full warranty details here.