Aragonite and calcite with pocket of calcite rhombs Dragon's Blood Jasper The cluster is composed of

The cluster is composed of a pair of longer intergrown points with several smaller ones fanning out from the base

Approx weight: 131g

There are three larger modified rhombohedral crystals perched atop

These sandstone coasters are made of Arizona Sierra sandstone sourced from central Arizona

Approx weight: 55–60g avg

Aragonite and calcite with pocket of calcite rhombs Dragon's Blood Jasper The cluster is composed ofLocale: Sidi Ayed, Fs Mekns Region, Morocco Approx dimensions: 3. 5 x 2 x 2" Approx size: 425g (0. 9 lb) Calcite and aragonite are polymorphs of one another, meaning that the same chemical composition (calcium carbonate) has crystallized into different crystal structures (trigonal and orthorhombic, respectively). Calcite and aragonite often grow together, and the two minerals are also frequent paramorphs of one anothera pseudomorph of the same