This Clear Quartz Crystal specimen weighs 43.8 ounces (1,242 grams). The measurement is 4.51" x 3.80" x 3.34 inches. (11.4" x 9.6" x 8.4) cm. Clear Quartz is a silicon dioxide with a hardness of 7.Its crystal system is hexagonal (trigonal), and it is among the most abundant of minerals. The item "Natural Clear Quartz Crystal Cluster Specimen 2.7 lb Large Stone from Brazil" is in sale since Saturday, September 16, 2017. This item is in the category "Collectibles\Rocks, Fossils & Minerals\Crystals & Mineral Specimens\Crystals". The seller is "crazybodies" and is located in New York, New York. This item can be shipped worldwide.