Lady's 54" Cultured Pearl Necklace. Pearl Size: 8.0 - 8.50mm Necklace Length: 54" Contains: 156 Natural Cultured Pearls Size: 8.00 - 8.50mm, Color: White, Origin: Japan. If your gal is into long, these would be the pearls. The style today is sporting a long strand of pearls with a knot placed somewhere around the bosom. It takes a long strand to be able to make a fashionable knot. This strand is 4 and a half feet long, and composed of 156 8.00-8.50mm Japanese cultured pearls. If you have two daughters, you might be able to give them both a necklace but it would be a shame to break it up.