The name "feldspar" comes from "field stone", because when feldspar weathers, it releases large amounts of plant nutrients, such as potassium, which enrich the soil.
Feldspars have particularly interesting effects with light. Moonstone seems to glow. Sunstone sparkles with reflected light. Labradorite is best of all. As you turn it, you can get a sudden glimpse of vivid peacock blue, or green.
![]() Labradorite |
![]() Moonstone |
![]() Amazonite |
![]() Sunstone |