Picrite from Grenville, Quebec, Canada. Comes with certificate of authenticity. Type of stone: Picrite. Dominant color: multicolored. Origin: Canada. Average weight (Carats): 21.6 carats. Dimensions (mm): 23 x 13 x 6 mm. Ref. : SKU030316. Extrusive igneous rocks formed by the rapid cooling of lava at the Earth's surface, such as basalt and andesite.
