Flowering Tube Onyx Rough and Tumbles

The family that found this material in central Utah called it Flowering Tube Onyx and usually just called it Tube Onyx. Tube onyx is beautiful worked into cabs. It is tricky to work, because heat buildup while grinding it causes it to separate along the distinctive banding. For suggestions on stabilizing this material, see my article on stabilization methods.

Tumbled pieces are rough tumbled, not polished.  This shows the patterns in the stone more easily.

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