This gorgeous, One of a Kind show stopper has two 12-14mm Tahitian Pearls accompaniedby three large Green Amethyst Brioletts accented with LondonBlue Topaz, Smokey Quartz, & Citrine on 16.5" Gold Vermeil Rolo Chain. Lobster clasp for secure closure. Evaluating the quality of a Tahitian Pearl - color, luster, size, surface quality andshape. Naturally large and round pearls have a higher value than small pearls with irregular shapes. With all other factor being equal, the larger the peal the more valuable it is. Round pearls are the most difficult to culture. The French Polynesian coral crowns in the middle of the great ocean continue to provide the perfect nutritious pristine environment necessary for Tahitian pearl cultivation.