Sunstone’s phenomenal varieties show a distinct and lively glitter called aventurescence.
Sunstone is a member of the feldspar group. Both the orthoclase and the plagioclase feldspar species boast a sunstone variety. Other feldspar group gems include moonstone, non-phenomenal orthoclase, phenomenal and non-phenomenal labradorite, and amazonite. Sunstone from Oregon is gaining attention as a natural and untreated product of the United States.
Sunstone is a member of the feldspar group of minerals.
Sunstone can have a sparkly, metallic-looking luster caused by flat, reflective inclusions.
Oregon sunstone is a transparent feldspar with glittery copper inclusions.
There are a number of processes used to alter the color, apparent clarity, or improve the durability of gems.
Sunstone, a member of the feldspar group, can be an orthoclase feldspar or a plagioclase feldspar, depending on chemistry. Both can show aventurescence. “Sunstone” applies to the gem’s appearance.