A Conch Pearl is a non-nacreous, calcareous concretion produced primarily by the Queen Conch (Strombus gigas). Conch pearls are usually small in size, 3 millimeters or less, and baroque or oval in shape. Their colors are generally pink, yellow, brown, white, or golden. Pink (or a salmon-colored orange-pink) is generally the most sought-after color, while white and brown are relatively rare. In addition to its striking colors, the conch pearl often has the flame structure on the surface. The flame structure generally appears in the pink or white-pink pearls, although the other colors sometimes also exhibit it. Strombus gigas, commonly known as the queen conch, is a species of large edible sea snail, a marine gastropod mollusc in the family of the Strombidae. This species is one of the largest molluscs native to the Tropical Northwestern Atlantic, from Bermuda to Brazil, reaching up to 35.2 cm in shell length. The queen conch is herbivorous and lives in sea grass beds, although the exact habitat varies during the different stages of its development. The adult animal has a very large, solid and heavy shell, with knob-like spines on the shoulder, a flared thick outer lip and a characteristic pink-coloured aperture . International trade in queen conch is regulated under the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) agreement, in which it is listed as Strombus gigas.