Silvery White Coin Freshwater Pearls exhibit a strong Silver overtone on their white base hue of consistent color, a much larger than average size, a thick irregular coin shape, a consistent silver tone. These Coin pearls are a company favorite due to size, hue, shape, and luster. Measurements are 18x16mm up to 20x16mm on a 16 inch strand of approximately 64 pearls. A grade We recommend the use of 28 gauge wire, .015 stringing wire, #0 or #1 Silk Poly Cording and Extra Fine Flex Needle with these beads.