Black Tourmaline Sphere Dendritic Opal formed in the upper mantle

formed in the upper mantle and delivered to the surface by volcanic activity

The color is olivine green—the specific shade that forms forty miles below the surface and comes out unchanged

a citrine bracelet

helping us to reclaim command of our own life

and sterling silver—three materials shaped by place

Black Tourmaline Sphere Dendritic Opal formed in the upper mantleSolid, 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