Smoky Quartz Mookaite Jasper It's Mohs hardness is 7

It's Mohs hardness is 7

Dimensions: 5 L x 3

as a dehydrated gypsum

Estimates suggest they grew to be between 15 and 18 meters in length

All are of similar size and quality

Smoky Quartz Mookaite Jasper It's Mohs hardness is 7Smoky Quartz is a brownish grey to almost black translucent variety of quartz. The color is attributed to natural radiation that activates color centers around aluminum impurities within the quartz crystal lattice. This quartz is usually found in intrusive igneous and certain high grade metamorphic rocks, like granite and orthogneiss. This piece is in its natural form. You will receive the exact item pictured. Dimensions: 1. 75 L X 1. 5 W X 2. 5 H