The oysters are nucleated with a bead composed of mother-of-pearl and a small piece of mantle tissue. This bead becomes the nucleus of the pearl and is the reason akoya pearls are more often perfectly round.
Carbon definition, Chemistry. a widely distributed element that forms organic compounds in combination with hydrogen, oxygen, etc., and that occurs in a pure state as diamond and graphite, and in an impure state as charcoal.
Learn more about carbon uses, the carbon atom, carbon properties, hydrocarbons, carbon structure, carbon fiber, carbon monoxide, your carbon footprint and other amazing carbon facts.Carbon is a chemical element with the symbol C and atomic number 6.The word carbon comes from the Latin word carbo, meaning coal.earn more about carbon uses, the carbon atom, carbon properties, hydrocarbons, carbon structure, carbon fiber, carbon monoxide, your carbon footprint and other amazing carbon facts.