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  • carbon fiber ring blanks
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Carbon Fiber Ring blanks


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Carbon Fiber Ring blanks

We created these carbon fiber composite ring blanks specifically for jewelers and ring makers and made them available in 11 of our time-tested designs. Up to 80% lighter than gold, our ring blanks are also resistant to all cleaning agents, oils, greases, and weak acids, as well as durable, watertight, easy to machine, and dimensionally stable. Carbon fiber base gives an irreprehensible shimmering effect.

  • Carbon fiber composite
  • Pleasant for touch
  • Low heat conductivity
  • Ouside diameter – 1.25″ (32mm)
  • Inside diameter – 1/2″ (12.7mm)



Ring made by COTO Design