Agglomerate from Italy. Comes with certificate of authenticity. Minerals collection. Type: volcanic igneous rocks. Stone type: Agglomerate. Dominant color: multicolored. Origin: Italy. Average weight (Carats): 24.1 carats. Dimensions (mm): 20 x 15 x 11 mm. Ref. : SKU025863. Rocks formed by the compaction and cementation of sediments, such as sandstone, limestone, and shale.