| Faceted stones weighing 25.56 and 61.24 carats along with a rhombohedron of rhodochrosite on matrix are illustrated and discussed by Sinkankas. |
| As in the other rhombohedral carbonates, the crystals possess perfect cleavages parallel to the faces of the rhombohedron. |
| It mostly occurs as massive subhedral calcite with some rhombohedron faces. |
| At most locations in the Deccan Traps, the primary form for calcite is the rhombohedron. |
