Peridotite from Estrie, Quebec, Canada. Comes with certificate of authenticity. Minerals collection. Type: plutonic rocks. Stone type: Peridotite. Dominant color: multicolored. Origin: Canada. Average weight (Carats): 12.8 carats. Dimensions (mm): 17 x 17 x 8 mm. Ref. : SKU030501. Igneous rocks rich in iron and magnesium, poor in silica, such as peridotite and dunite, often from the Earth's mantle.