Tumbled!
A gemstone, possibly a form of agate. I used to play around with this in my youth. I made a set up to tumble them with, a continuous rated motor which ran for 6 weeks on the trot, 24 hours a day, with a carborundum powder rotating the stones inside the plastic drum...some nice effects after using a polishing agent for a couple of days on them afterwards.
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- Nikon D90
- 1/50
- f/14.0
- 90mm
- 400
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