colorful shell material with seastar stone in heart figure

s commonly known as shell include:An animal shell, the hard, rigid outer covering of an animal such as a mollusk or a turtle. The hard outer layer of some plant fruiting bodies such as nuts.A type of user interface in computer software, often an operating system shell, such as a Unix shell command line interpreter in the Unix operating system or the DOS Shell in MS-DOS. See shell (computing).An electron shell (energy level), consisting of a number of electrons in an orbital around an atomic nucleusThe short name (and Brand) of the Royal Dutch Shell energy multinational, and its US subsidiary Shell Oil CompanyA projectile with explosive charge, shot from a gun; typically shells are larger than bullets and shot from larger guns. See shell (projectile).In physics, see On shell and off shellA structural form, usually made of concrete, that principally derives its strength by virtue of its shape. The term is derived from the primary usage in the context of nature. For example, the shell of an egg, though very thin, is difficult to break because of its shape.A long, narrow, rowed watercraft. See racing shell.A sorting algorithm invented by Donald L. Shell. See shell sort. See more at Wikipedia.org...

[yle="font-weight:bold;">Stone can refer to any of the following: A rock. See also stone skipping, curling.As a verb, to stone, a method of execution using rocks, stoning.A gemstone, as used in jewelry.A stone is a unit of weight equal to fourteen pounds.The hard covering enclosing the seed of a drupe such as a peach.As a verb, the intoxicating effects of cannabis, as in to be stoned.Stone, a Finnish heavy metal band.A calculus"The Stones" is an informal term for the British rock band The Rolling Stones."Stones" was the name of an early album by Psychadelic Percussion featuring the Moog synthesizer. See more at Wikipedia.org...]