The invention relates to a cultured bivalve mollusk (particularly quahog) pearl and a method of preparation thereof. The method includes implanting a nucleus material and a donor bivalve mollusk mantle tissue in the gonad or gut area of an anesthetized bivalve mollusk. An ideal bivalve mollusk or a quahog is four-years old or younger for rapid pearl production. The cultured pearl is harvested after a period ranging from six months to three years. Such cultured bivalve mollusk pearl is identical in appearance to the natural pearls.
