These are roughcuts of Wyoming Stromatolite Rock , sourced from Wyoming. These rocks get their unique look from 2 billion years of immense heat and pressure, and they are made of carbonate minerals like dolomite and calcite along with layers of sediment. They also consist of an interesting pattern design of spirals and wavy lines and have a mix of colors such as tan, brown, gray and dark gray.
Slab A-8 1/4" x 3 7/8" x 7mm, weight 343 grams Slab B- 8 3/4" x 3 7/8" x 7.2mm, weight 354 grams Slab C- 8" x 3 1/2" x 9.05 mm, weight 346 grams Slab D-9" x 4" x 7.6mm, weight 371 grams
