A one-page overview of how to look after 27 common crystals. Hardness is given on the Mohs scale, where 1 is softest and 10 is hardest.
| Crystal | Mohs hardness | Water | Strong sun | Notes |
|---|---|---|---|---|
| Amethyst | 7 | Short rinse | Fades | Keep off windowsills |
| Rose quartz | 7 | Short rinse | Can fade | |
| Clear quartz | 7 | Short rinse | Fine | |
| Citrine | 7 | Short rinse | Fine | |
| Smoky quartz | 7 | Short rinse | Can fade | |
| Tiger’s eye | 6.5 to 7 | Short rinse | Fine | |
| Green aventurine | 6.5 to 7 | Short rinse | Fine | |
| Carnelian | 6.5 to 7 | Short rinse | Fine | |
| Red jasper | 6.5 to 7 | Short rinse | Fine | |
| Black onyx | 6.5 to 7 | Short rinse | Fine | |
| Aquamarine | 7.5 to 8 | Short rinse | Can fade | |
| Black tourmaline | 7 to 7.5 | Short rinse | Fine | Brittle |
| Labradorite | 6 to 6.5 | Wipe | Fine | Do not soak |
| Moonstone | 6 to 6.5 | Wipe | Fine | Do not soak |
| Amazonite | 6 to 6.5 | Wipe | Can fade | Do not soak |
| Pyrite | 6 to 6.5 | No | Fine | Tarnishes when damp |
| Hematite | 5.5 to 6.5 | No | Fine | Can rust |
| Sodalite | 5.5 to 6 | Wipe | Fine | |
| Lapis lazuli | 5 to 5.5 | No | Fine | Porous |
| Obsidian | 5 to 5.5 | Short rinse | Fine | Chips easily |
| Turquoise | 5 to 6 | No | Can fade | Porous |
| Fluorite | 4 | Wipe | Fades | Soft |
| Malachite | 3.5 to 4 | No | Fine | Copper mineral, never in drinking water |
| Shungite | 3.5 to 4 | Short rinse | Fine | Leaves black marks |
| Celestite | 3 to 3.5 | No | Fades | Fragile |
| Calcite | 3 | No | Fine | Soft, dulls in water |
| Selenite | 2 | Never | Fine | Very soft |
Gentle cleansing methods that suit every stone: smoke from incense, sound from a bowl or bell, a night on a selenite plate, or a night in moonlight.
Source of this sheet: wellbeingbodysite.com. Read the full guide at wellbeingbodysite.com/crystal-care/