KMR169blk Coal Black Concrete Ring


KMR169blk Coal Black Concrete Ring



This ring features a comfort fit interior with a strip of stainless intersecting the coal black concrete on the outside. Make a unique statement with this wedding band. Also available in 14k gold or platinum. Custom sizes are available upon request, please email for details.

Prices shown in USD.


Materials Concrete + Stainless Steel
Size 6mm x 2.5mm
Lead Time 48 hours

Additional information


We use a new generation of concrete for our jewelry called ultra high performance concrete which has the compressive strength of 150 Mpa. Over 20 times stronger than traditional concrete. We offer a lifetime warranty on these rings, if the concrete were to chip or break at anytime, we will replace it.

Sizing Information

These rings are designed with a comfort fit feature. To size, please visit a local jeweller and have them use a wider sizing ring to size your finger. Comfort fit rings will fit a half size smaller than what you are sized. Please order a half size smaller than what your size is measured.