Conch Pearl, Strombus gigas or "Queen Conch", Caribbean Sea. Photo Bonhams.

Characterized by its exceptionally rich, deep reddish-rose color, this lovely pearl possesses an excellent flame pattern iridescence and lustrous porcellaneous surface. Weighing approximately 2.65 carats and measuring 8.5 x 7.0 x 5.4mm. Sold for US$ 4,000 (€2,989)

Bonhams. Gems, Minerals and Lapidary Works of Art New York - 23 May 2012