Crystal Identification Tests You can do at Home

When trying to determine what crystal you have, there are several easy tests you can conduct at home to help narrow things down.
The Hardness Test, which involves testing to see what scratches the crystal, and what the crystal itself scratches.
The Streak Test, which involves rubbing the crystal on an unglazed piece of porcelain to see what color streak is left behind.
The Magnet Test is used to test suspected meteorites, and the Acid Test, which can use household vinegar to test crystals like Calcite, and involves putting a drop or two of vinegar on the crystal and watching for a “fizzy” reaction.