Caribbean Calcite obelisk 694g clarity The matrix can consist of

The matrix can consist of a mixture of Limestone

These fascinating specimens weigh between 12 and 18g

This Mangano Calcite obelisk 95mm weighs 181g

Warring States Carnelian Agate is highly prized

Orthoceras fossils are among the earliest recognizable animals

Caribbean Calcite obelisk 694g clarity The matrix can consist ofPushing you This Caribbean Calcite obelisk 694g is a great exemplar of this beautiful aqua blue stone. Aragonite is a calcium carbonate mineral, formed in limestone caves and around hot springs. Aragonite has the same composition as Calcite, with a more compact structure. It is often recognised as a twinned pseudo hexagonal prismatic crystal. Twinning results from interruptions during the growth of the crystal. Aragonite is a powerful stone with