Which stones will polish?

Most stones at the beach will now not polish, however there are many so that it will. The more difficult stones polish exceptional - those that appearance nearly shiny already. Reject the ones stones which appearance grainy, they will be difficult, however will no longer polish.

One manner of checking the hardness of a stone is to attempt to scratch it with a penknife. If the knife cuts a mark or produces a powdery line, then the stone will now not polish. If the knife leaves a steel line, then the stone is tougher than metallic and it'll polish. This isn't always to mention that softer stones, along with serpentine, can not be polished, however they must handiest be polished with different stones of comparable hardness and not combined with tougher stones.

Tumbling instances will be shorter with softer stones and a near watch will have to be saved on them, because it will not take goodbye to grind and varnish them. Pick out stones which might be typically 1 inch in diameter or smaller, one or two large stones may be polished in a load that consists mainly of smaller stones.