Pair of Black Ceramic and Tungsten Carbide with Koa Wood Inlay - 4mm & 4mm, Dome Shape, Comfort Fitment Select 4mm Tungsten Ring Size:5.5 This black tungsten ring features

This black tungsten ring features a cross brushed finish center

A petite ring great as a single or for stacking

The ring is beautifully crafted with the Hawaiian koa

Size: 21mm(W) x 60mm(L)

The Old English pattern is one of Hawaii's most beloved jewelry motifs

Pair of Black Ceramic and Tungsten Carbide with Koa Wood Inlay - 4mm & 4mm, Dome Shape, Comfort Fitment Select 4mm Tungsten Ring Size:5.5 This black tungsten ring featuresItem Specifications Material: Black Ceramic and Tungsten Carbide Width: 4mm Shape: Barrel Dome Finish: High Polish Inlay: Hawaiian Koa Wood Inlay Style: Single Fitment: Comfort Product Description Tungsten carbides are in no doubt one of the strongest metal used in the jewelry industry. It is approximately two times stiffer than steel and twice the density. Our tungsten carbides are also nickel free which makes it hypoallergenic for most individuals.