Lot of 5 pieces, High Quality ultra rare crystal of Parisite - from Muzo Colombia. Total Weight: 4.3 grams or 0.152 oz. The approximate size of each piece is: 0.8 cm - 1.1 cm aprox. / 0.31" - 0.43" aprox. Parisite is a rare mineral consisting of cerium, lanthanum and calcium fluoro-carbonate, Ca(Ce, La)2(CO3)3F2.
Parisite is mostly parisite-(Ce), but when neodymium is present in the structure the mineral becomes parisite-(Nd). It is found only as crystals, which belong to the trigonal or monoclinic pseudo-hexagonal system and usually have the form of acute double pyramids terminated by the basal planes; the faces of the hexagonal pyramids are striated horizontally, and parallel to the basal plane there is a perfect cleavage. The crystals are hair-brown in color and are translucent. The hardness is 4.5 and the specific gravity is 4.36.Light which has traversed a crystal of parisite exhibits a characteristic absorption spectrum. I work directly with local inhabitants of Muzo and personally import these minerals. I select the best quality pieces. This item is in the category "Collectibles\Rocks, Fossils & Minerals\Crystals & Mineral Specimens\Crystals". The seller is "theczarofgems" and is located in this country: US. This item can be shipped to United States.