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Ideal stones for acid testing. These test stones are available in a rough or smooth finish and are packaged in a wood box for safekeeping. All stones are approximately 6 x 2” in size.
Natural (Novaculite) stone to used to scratch test gold and other precious metals. Stone comes in wooden box.
WARNING:
California's Proposition 65
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| Dimensions | 6" x 2" |
| Stone | Smooth |
How to Conduct an Acid Scratch Test