NATURAL CRYSTAL CHEMISTRY : SALT, QUARTZ & GEMSTONES

Listen to the facts about how natural crystals are formed on earth. Two main natural crystal discussed are salt and quartz crystals including the various types of gemstones.
Salt 0:16 (Error corrections: The Green atom is Cl & Blue is Na)
Himalayan Rock Salt 0:38
Quartz 1:00
Geoscientific Factors 1:35
Smooky Quartz, Ametyhst,Citrine,Rose Quartz 3:23
Chalcedony, Agate,Jasper 4:13
Hematite 4:51
Beryl, Topaz, Sapphire, Ruby 5:12
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