Check the listing for details. Pretty Sunstone Tower 5.33"/243 Grams. Condition: New. Listed at 10.00 USD. Sunstone is a type of feldspar mineral characterized by its warm, glittering schiller caused by light reflecting from tiny plate-like inclusions (commonly copper or hematite). Sunstone is found worldwide, with notable sources in Oregon (USA), Norway, India, Russia, and Canada.