Natural prasiolite is rare

Quartz is Mohs 7 and durable

and motivated action

making it a relatively recent entry to the jewelry market

and Greek traditions

Black Tourmaline Sphere Size:1.9"R Natural prasiolite is rareSolid, heavy, and deeply blacka sphere that has real weight in the palm. Black tourmaline (schorl) is a sodium iron aluminum borosilicate belonging to the tourmaline supergroup. Its dense black color comes from a high iron content, and its opacity sets it apart from the colored transparent tourmaline varieties. Formed primarily in granite pegmatites and metamorphic rocks, schorl is the most common tourmaline species and one of the most widely