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In addition to our general Crystal Cautions page, we would also like to provide this information about crystals that may dissolve, crack, develop rust, or be otherwise damaged when exposed to water or other liquids over time. It's not to say that if your crystal touches water, it will instantly dissolve, this is simply not true, but it can become damaged over time. This list is not all-inclusive and many crystals not listed here may crack if exposed to hot water.

Crystal

Reason

Carnelian

Salt water can cause fractures

Celestite

Can break apart if fragile (and over time)

Galena

Will rust

Halite

Will dissolve

Hematite

Can rust

Labradorite

Can dissolve over time

Lepidolite

Will flake apart especially if in its natural state because it's flakey

Lodestone

Can rust

Malachite

Can break in hot water and it's toxic

Mica

Can flake apart

Moldavite

Can break in hot water

Muscovite

Can flake apart

Obsidian

All forms can break from extreme liquid temperatures

Opals

Can break or crack in extreme liquid temperatures

Pearls

Will lose luster and can break

Pyrite

Combined with water produces sulfuric acid

Selenite

Can dissolve over time and if the fibrous piece is fragile

Turquoise

Can fade

Ulexite

Can dissolve

 



Posted on October 29, 2013

  Just wanted to add that lapis lazuli also dissolves with repeated exposure to water.  (Submitted by: Moon Park on November 26, 2021)
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  I have a turquoise ring that I have had for 54 years. I wash my hands with the ring and it has never faded. I believe that is dyed howlite.  (Submitted by: Patty on May 27, 2020)
Reply
  Thank you this was very informative and interesting.  (Submitted by: Mouse on April 17, 2016)
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