Since we began small selling packs of 100 pieces, we have received good reviews for our product quality. These are our classic crystals sold in packs of 10 dozen. They are carefully inspected and packaged in Japan. We strive to provide our customers with only the most beautiful items possible. Small shape distortions and scratches become prominent when used on nails, making the product unsuitable for that purpose. *There may be some pieces with burrs, chips, and scratches that we were unable to remove.We thank you for your understanding. We determine the amount of pieces by weight, so there may be a slight variation in the content. SS3: Approx. 0.051 to 0.055 inches (1.3 to 1.4 mm). SS5: Approx. 0.067 to 0.071 inches (1.7 to 1.8 mm). SS6: Approx. 0.075 to 0.079 inches (1.9 to 2.0 mm). SS8: Approx. 0.091 to 0.094 inches (2.3 to 2.4 mm). SS10: Approx. 0.106 to 0.11 inches (2.7 to 2.8 mm). SS12: Approx. 0.12 to 0.13 inches (3.0 to 3.2 mm). SS16: Approx. 0.15 to 0.16 inches (3.8 to 4.0 mm).. SS20: Approx. 0.18 to 0.19 inches (4.6 to 4.8 mm). SS30: Approx. 0.25 to 0.26 inches (6.4 to 6.6 mm). SS40: Approx. 0.33 to 0.34 inches (8.4 to 8.7 mm). S50: Approx. 0.39 inches (10 mm). *Sizes may vary depending on the method of measurement.