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Cobalt 5mm ring
Cobalt 5mm ring

Cobalt 5mm ring

ID : TECO 288-5mm
Condition :  New
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Full size:7-12
Half size:8.5, 9.5, 10.5
Exceptions: (TECO 288 TECO 290 TECO 292 TECO 294 TECO 296)- sizes only 5-10 no half sizes

Cobalt is a hard, luscious grey metal. Pure cobalt is n ot found in nature, but compounds of cobalt are common. Cobalt has a hardness of 5.5 on the Mohs scale of mineral hardness. Cobalt is the whitest contemporary material offered today. It is natural and less dense than other materials, allowing for greater height and shape to be yielded into designs. Cobalt is hard. Platinum is approxamtly 140 Vickers as compared to Cobalt which is 450 Vickers. Cobalt is not only hypoallergenic; it is bio-compatible to the body. Cobalt is soft and susceptible to scratch and wear, but could be polished and resized up by up to ½ size, not full.