Diameter: 3.8 (95 mm). Stunning dark blue Calcite from Argentina.. Awesome contrasting brown Aragonite matrix marbling.. GUARANTEE: Our personal commitment to you. The item "SPHEREFACTOR Spectacular Brilliant Argentinian BLUE CALCITE Crystal Ball Sphere" is in sale since Tuesday, May 1, 2018.This item is in the category "Collectibles\Rocks, Fossils & Minerals\Crystals & Mineral Specimens\Display Specimens". The seller is "spherefactor2014" and is located in San Antonio, Texas. This item can be shipped worldwide.