Coral gemstone knowledge

Coral is one of the most precious stone on earth, and we can use it to make fashion jewelry to bring our world more colorful affection

The coral formation process creates a structure that is unique to the particular coral species, but the ultimate physical characteristics of each coral species is also subject to environmental influences. It is believed that corals first appeared during the Cambrian period, around 570 million years ago, yet Cambrian corals are extremely rare as fossils. Fossilized Rugose and Tabulate corals from the Ordovician period around 488 million years ago, are fare more prevalent.

 There are two distinct types of coral: Calcareous Coral which is primarily composed of calcite, and Conchiolin Coral which is primarily composed of protein. Formation of a calciferous exoskeleton involves deposition of calcium carbonate by the polyps from calcium ions that are isolated from the surrounding seawater. Conchiolin forming proteins are made up of organic macromolecules consisting of polysaccharides and proteins bound together with aragonite crystals.