Gemstones I Love – the Feldspar Group

The Feldspar¬†group includes several very popular gemstones – Amazonite, Moonstone, Sunstone, and Labradorite among others. In the earth’s crust, feldspars may be more abundant than all other minerals combined. The majority of the common feldspars fall into two groups, (1) the alkali feldspars – potassium aluminum silicates (KAlSi3O8) and sodium aluminum silicates (NaAlSi3O8) and (2)…

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