Loess from Mexico. Comes with certificate of authenticity. Collectible minerals. Type: carbonate sedimentary rocks. Stone type: Loess. Dominant color: multicolored. Origin: Mexico. Average weight (Carats): 11.1 carats. Dimensions (mm): 22 x 11 x 11 mm. Ref. SKU015443. Aeolian dust sediment, often used for geological and soil studies.