Talc-1: Stone can be scratched by a fingernail.

Gypsum-2: Stone can be scratched by a fingernail.

Calcite-3: Stone can be scratched with a coin.

Fluorite-4: Stone can be scratched by a knife blade.

Apatite-5: Stone can be scratched by a knife blade.

Orthoclase-6: Stone can be scratched by a piece of glass or a knife blade.

Quartz-7: Stone can be scratched by quartz.

Topaz-8: Stone can be scratched by corundum or a diamond.

Corundum-9: Stone can only be scratched by either corundum or a diamond.

Diamond-10: Stone can only be scratched by another diamond.

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KEEP IN MIND:  Scratch Tests are considered to be a destructive test; only perform this test if you are truly committed.