Crystal Care: Water, Sunlight and How to Clean Them
"Can you put crystals in water" is the most-asked question about crystals and the one most often answered badly. The real answer is that it depends on the stone, and that a few of them are genuinely a bad idea – not because of anything mystical, but because of what they are made of.
This page covers which stones tolerate water, which do not, how to actually clean a crystal, and the one care rule that matters more than all the others.
The rule that matters most: keep them out of the sun
More crystals are ruined by a sunny windowsill than by anything else. UV breaks down the colour centres in several common stones, and the fading is permanent.
| Stone | Fades in sunlight? |
|---|---|
| Amethyst | Yes – noticeably, over months |
| Rose quartz | Yes – pales toward grey-white |
| Citrine | Yes |
| Fluorite | Yes |
| Clear quartz | No |
| Black obsidian | No |
| Tiger eye | No |
| Green aventurine | Minimal |
| Sodalite, jasper | Minimal |
A windowsill is the first place most people put a crystal and the worst place for half of them. A shelf a metre back from the window gets nearly the same light and none of the damage.
Water: which stones are fine and which are not
Quartz-family stones are hard, non-porous and chemically stable, so a brief rinse does nothing. Softer, porous or metallic stones are a different matter.
| Stone | Brief rinse | Why |
|---|---|---|
| Clear quartz, amethyst, rose quartz, citrine | Fine | Hard and non-porous |
| Jasper, agate, carnelian, aventurine, tiger eye | Fine | Chalcedony and quartzite, both stable |
| Obsidian | Fine | Volcanic glass; avoid thermal shock from hot water |
| Selenite | No | It is gypsum – it dissolves. Water leaves it chalky and it does not recover |
| Pyrite, hematite | No | Iron content; they rust and stain whatever they sit on |
| Malachite | No | Soft, and a copper carbonate – see the safety note below |
| Lapis lazuli, turquoise | No | Soft and porous; water dulls the surface and lifts any stabiliser |
| Sodalite | Brief only | Contains calcite veining, which is soft |
A safety note on "crystal-infused water"
Do not put stones in water you intend to drink. Several common decorative minerals contain metals that are not safe to ingest – malachite and chrysocolla contain copper, galena contains lead, cinnabar contains mercury – and tumbled stones are frequently sold without the mineral being named accurately, so you often cannot know what you have. There is no benefit on the other side of that trade. We say this as a matter of chemistry, not of belief.
How to actually clean a crystal
- Dust first, with a dry soft brush. A make-up brush or a clean paintbrush. This is all most pieces ever need.
- If it needs more: a cloth barely damp with plain water, for the water-safe stones above only. Dry it immediately.
- Never: dish soap, vinegar, ultrasonic cleaners, or soaking. Soap leaves a film in the crystal faces, vinegar attacks carbonates, and ultrasonic cleaners shake pieces off a cluster.
Clusters and chip-covered pieces are the fiddly ones. A brush gets between the points; a cloth catches on them and pulls them loose – which matters for anything made of wired chips, like a gemstone tree.
What about "cleansing" and "charging"?
You will see instructions to cleanse crystals in moonlight, salt, sage smoke or running water. Those are practices within various traditions, and people find them meaningful. We make no claim that they do anything measurable, and we mention them here only because two of them will damage your stone:
- Salt is abrasive and hygroscopic. It scratches polished surfaces and pits porous stones.
- Running water is the method most likely to destroy selenite, and to rust pyrite and hematite.
Moonlight and smoke harm nothing. If a practice matters to you, those are the safe ones.
Storage and handling
- Do not let stones touch each other in a drawer. Quartz is hard enough to scratch most other stones, including other quartz. A pouch each, or a lined tray.
- Points chip at the tip. That is where a tower takes its damage – stand it where it will not be knocked.
- Clusters shed. A few loose crystals in the box after shipping is normal on a natural cluster, not a defect.
Care by what we sell
- Raw Amethyst Cluster – brush only, and keep it out of direct sun; amethyst is one of the faders.
- Crystal Tower Trio – the Calm set contains amethyst and rose quartz, both of which fade. The Grounding set (obsidian, tiger eye, green aventurine) is sunlight-stable.
- Seven Chakra Stone Set – all seven tolerate a brief rinse. Store them so they are not grinding against each other in the pouch.
- Gemstone Tree – brush, never a cloth. The chips are wired on individually.
More: agate coasters: dyed or natural · crystal shapes explained · how to tell if a crystal is real · rose quartz vs amethyst · all crystal buying guides · crystal gifts for Christmas, by recipient · Crystals · Crystal Sets
FAQ
Can you put crystals in water?
Quartz-family stones – clear quartz, amethyst, rose quartz, citrine, agate, jasper, aventurine, tiger eye – tolerate a brief rinse. Selenite dissolves, pyrite and hematite rust, and malachite, lapis and turquoise are too soft and porous.
Is crystal-infused water safe to drink?
Do not do it. Several common decorative minerals contain copper, lead or mercury, and tumbled stones are often sold without the mineral being named accurately, so you cannot be sure what is in the glass.
Do crystals fade in sunlight?
Amethyst, rose quartz, citrine and fluorite fade noticeably and permanently. Clear quartz, obsidian and tiger eye do not. Keep the faders off a sunny windowsill.
How do I clean a crystal cluster?
A dry soft brush between the points. A cloth catches and can pull crystals loose. Avoid soap, vinegar, soaking and ultrasonic cleaners.
Can I cleanse crystals in salt?
We make no claim about cleansing, but salt is abrasive and will scratch polished surfaces and pit porous stones. If a practice matters to you, moonlight and smoke are the ones that harm nothing.
Some crystals came loose in the box. Is that a defect?
On a natural cluster, a few loose crystals after shipping is normal rather than a fault. If a piece arrives broken, that is different – tell us and we will replace or refund it.