Non-nacreous melo pearls are produced by melo volutes, which are found along coastal areas of Myanmar as well as Indonesia, Thailand, Cambodia, and Vietnam. Occurring in a range of colors, the most prized is the intense orange hue, with a silky flame-like structure and a porcellaneous luster.
Considered the aristocrats of shells , Volutes are among the most highly sough after and beautiful shells. Unlike many seashells , however, the large, living animals are just as beautiful as the shells, with outrageous colours and patterns.
The Volute is a fast moving carnivore that feeds on large crabs and even occasionally sleeping fish, killing its prey by enveloping and suffocating it with its foot.
Usually found in deep water, a few species can be seen in snorkelling depths in the early evening and at night. Volutes remain buried in the sand most of their lives, keeping the shell clean and relatively free of foreign growth.