KNG107c Kingstonite Cabochon Morrisonite which was used to mark

which was used to mark its high grade in the rough

Primary image features the rock rough

and translucent blue-gray agate

Mahogany Obsidian is a type of black Obsidian with reddish brown coloring from hematite inclusions

The agate can form in veins and nodules

KNG107c Kingstonite Cabochon Morrisonite which was used to markKingstonite, 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. 30mm x 31mm Designer Cabochons: The Gem Shop, Inc. produces