KNG101c Kingstonite Cabochon Grape Agate Black Tourmaline is known as

Black Tourmaline is known as a good grounding stone and useful for people who are facing large amounts of stress at work or home

but may not be the exact hearts pictured

Gemstone measures 14 mm x 20 mm

If you wish to see samples of any of these stones you can visit our gallery and see displayed an example of each type of stone we cut

KNG101c Kingstonite Cabochon Grape Agate Black Tourmaline is known asKingstonite, also commonly called Kingston Ore or Kingstone Conglomerate, is a conglomerate rock primarily made up of native copper, reddish rhyolite, and felsite pebbles. It is found near the Kingston Copper Mine in Keweenaw, Michigan. This polished Kingstonite cabochon features a brick red matrix, spots of gray or black felsite, and veins of native copper throughout that flash in the light. 23mm x 46mm Designer Cabochons: The Gem Shop, Inc. produces