KnowCan This Crystal Go in Water?
Pick your crystal for a clear water, sunlight and salt-water verdict — plus its Mohs hardness, any toxicity warning, and the cleansing methods that are actually safe for it.
How to tell if a crystal is safe in water, sun and salt
Three simple physical properties decide almost everything: hardness (the Mohs scale), whether the mineral is porous or water-soluble, and whether its colour comes from a light-sensitive centre. Soft stones below about 5 on the Mohs scale scratch and dissolve; porous ones drink up water, oils and dye; copper, iron and lead minerals corrode or are toxic; and many coloured stones fade in the sun. When in doubt, use a dry method — moonlight, smoke, sound, a selenite plate or dry rice are safe for every stone here.
Crystals safe in water
Hard and water-safe; only dyed agate risks fading in sun.
Read the full Agate guide →A hard, water-safe quartz — but its purple colour fades in sunlight.
Read the full Amethyst guide →Very hard and water-safe, but its blue fades in sunlight.
Read the full Aquamarine guide →Hard and water-safe; much black onyx is dyed, so mind strong sun.
Read the full Black Onyx guide →A tough, colour-stable stone — safe all round.
Read the full Bloodstone guide →Hard and water-safe; strong sun can slowly shift its orange tone.
Read the full Carnelian guide →Hard and water-safe, but its apple-green colour is light-sensitive.
Water-safe quartz whose warm colour fades in the sun — especially heat-treated citrine.
Read the full Citrine guide →One of the safest stones for water — but a clear point can focus sunlight like a lens.
Hard, colour-stable and safe for water, sun and salt.
Read the full Garnet guide →Water-safe quartz whose green can fade in sunlight.
One of the sturdiest stones — safe for water, sun and salt.
Read the full Jasper guide →A natural glass — water-safe but delicate and easily scratched.
Inert volcanic glass — water-safe, but softer and can chip.
Read the full Obsidian guide →Water-safe, but its pink colour is famously light-sensitive.
Read the full Rose Quartz guide →Water-safe, but the smoky tone lightens in strong sunlight.
Hard, colour-stable and water-safe.
Read the full Tiger's Eye guide →Crystals that take only brief water
A feldspar whose blue-green can fade — brief water and shade.
Read the full Amazonite guide →Fossil tree resin, not a mineral — soft, and it dries out in the sun.
Read the full Amber guide →Right at 5 on the scale — soft enough to scratch, keep water brief.
Read the full Apatite guide →Hard, but its lengthwise striations make it prone to splitting — keep water brief.
Read the full Black Tourmaline guide →Soft at 4 Mohs and light-sensitive — brief water, no sun, no salt.
Read the full Fluorite guide →Bladed crystal that splits along its length — keep water brief.
A feldspar with cleavage planes — keep water short.
Read the full Labradorite guide →A soft blue pectolite that fades in the sun — keep water brief.
Read the full Larimar guide →A feldspar that cleaves easily — brief water only.
Read the full Moonstone guide →Water-bearing and prone to cracking with heat and dryness.
Read the full Opal guide →Harder than rhodochrosite but still keep water and salt brief.
A soft carbon mineral — colour-stable but can leave residue in water.
Softish and slightly porous — keep water short and out of long sun.
A feldspar — colour-stable in sun but keep water brief.
Crystals to keep out of water
Anhydrite that reacts with water — keep it dry.
A soft carbonate that reacts with acids — keep it dry.
A soft, toxic copper mineral whose blue fades — keep it dry.
Read the full Azurite guide →A soft carbonate that dissolves in acid — keep it dry.
Read the full Calcite guide →Soft, delicate and fade-prone — keep it dry and shaded.
Read the full Celestite guide →Soft, porous and copper-bearing — keep it dry, never as an elixir.
Hard, yet almost always fractured and oil-treated — don't soak it.
Read the full Emerald guide →Iron-based and prone to rust — keep it out of water.
Read the full Hematite guide →Soft and very porous — and often dyed blue to fake turquoise.
Porous and pyrite-flecked — water ruins the finish.
A soft, layered lithium mica — water splits the layers.
Read the full Lepidolite guide →Beautiful but toxic copper ore — keep it dry and never make an elixir.
'Fool's gold' — reacts with water and should stay dry.
A soft pink carbonate that dissolves in acid and fades in sun.
Water-soluble gypsum — water literally dissolves it.
Read the full Selenite guide →Porous and famously absorbent — keep it dry and out of the sun.
Read the full Turquoise guide →The safest way to cleanse any crystal
These dry methods are gentle enough for soft, porous and even toxic stones — reach for them first:
Hardness figures follow the standard Mohs scale and mainstream gemmological references; water, salt and sunlight guidance follows established lapidary care practice. This is general information about the mineral, not medical or professional gemmological advice. Never ingest a crystal or drink water it has soaked in, and never make a gem elixir from a stone you have not confirmed is non-toxic and water-safe.