Which Crystals are safe to go into water?

Water Safe Crystals:

Clear Quartz
Rose Quartz
Amethyst
Smokey Quartz
Citrine
Agate
Moonstone
Carnelian (though NOT safe in salt water)
Rutilated Quartz
Jasper
Tiger's Eye
Aventurine
Black Obsidian (FYI: can break in EXTREME cold or hot water temperatures)

Water Unsafe Crystals

Fluorite (especially SALT water)
Selenite
Apophyllite
Tangerine Quartz
Gypsum
Lepidolite
Opal (although Australian Boulder Opal is generally safe, because it not porous)
Azurite
Apatite
Halite
Malachite
Turquoise
Ulexite
Labradorite
Celestite
Pyrite
Hematite