Sterling Silver High-Luster Twisted Three-Row Cultured Freshwater Pearl Strand (4-8mm), 18" 18-inch twisted 3-rows necklace crafted from strands of freshwater cultured pearls secured with 925-sterling silver fish-hook clasp. The necklace was strung hand-knotted and strung with combination of 4-5.5mm and 8-8.5mm simultaneously. The natural properties and process of pearl formation define the unique beauty of each pearl. The image may show slight differences in texture, color, size, and shape due to the resolution of the computer. This jewelry is beautifully assembled and designed by our highly skilled jewelers in the USA with great attention to quality and detail. Makes for a perfect necklace for yourself or for the women you value and love. Carved rings are naturally occurring imperfections that result from the pearl rotating inside the mollusk as it is growing. They define the unique beauty of each pearl and may vary in size, number, and depth per pearl.