The pearl is also the 3rd and 30th year anniversary stone , a popular semi-precious gemstone used in fashion jewelry.South Sea cultured pearls (Pinetada Maxima) are found in the warm waters as far north as the Philippines, to as far south as Western Australia. Varying between black and white in color, and 8.00 to 20.00 mm in size, the baroque form far outnumber the preferred round form. That, combined with their three to six year growth time, make the South Sea pearl a special gem.