Photo #174
Utah Wonderstone (same mineral as Photo #10).
It is a volcanic rock that is produced by particles of glass being fused together and then compressed by overlying rock and stained with iron oxide ground water over time.
The particular material I purchased (cheap of course) has very large particles which creates pores (lots of them).
Tumbling this material is easy...polishing it is hard. I have tried different techniques to polish, and I never seem to get past a certain level. However, a quick review of listings on Etsy for people working the same type of stone I have...would indicate that I did a damn fine job.
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