Abalone Shell Brooch

Julie Kirby designs a sterling silver and abalone shell broach with a hibiscus motif.

That's Clever! : Episode HCLVR-335 -- More Projects »
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Steps 18-19
18. Soak the brooch in the acid bath for a few minutes.

19. Place it in a polishing tumbler with steel shot and burnishing compound for about eight hours. The brooch comes out of the tumbler very shiny.