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.
What is 'Regulation D - Reg D'. Regulation D (Reg D) is a Securities and Exchange Commission (SEC) regulation governing private placement exemptions. Reg D allows usually smaller companies to raise capital through the sale of equity or debt securities without having to register their securities with the SEC. Next Up.