Stone Size Chart

To scale this chart to your computer monitor, simply measure the line below with a ruler directly on top of the monitor. To trace the circles on paper, you may want to view the inverted image.

Length of the above line: cm

Size Conversion Chart

   PP - Pearl Plate; SS - Stone Size; mm - millimeter; in - inch
  PP 1 / SS 000 0.80-0.90 mm 0.032-0.035 in.   SS 21 4.80-4.90 mm 0.19 in.
  PP 2 / SS 00 0.90-1.00 mm 0.035-0.039 in.   SS 22 4.90-5.10 mm 0.19-0.20 in.
  PP 3 / SS 0 1.00-1.10 mm 0.039-0.043 in.   SS 23 5.10-5.27 mm 0.20-0.21 in.
  PP 4 / SS 1 1.10-1.20 mm 0.043-0.047 in.   SS 24 5.27-5.44 mm 0.21 in.
  PP 5 / SS 2 1.20-1.30 mm 0.047-0.051 in.   SS 25 5.44-5.61 mm 0.21-0.22 in.
  PP 6 / SS 2 1.30-1.35 mm 0.051-0.053 in.   SS 26 5.61-5.78 mm 0.22-0.23 in.
  PP 7 / SS 3 1.35-1.40 mm 0.053-0.055 in.   SS 27 5.78-5.96 mm 0.23 in.
  PP 8 / SS 3 1.40-1.50 mm 0.055-0.059 in.   SS 28 5.96-6.14 mm 0.23-0.24 in.
  PP 9 / SS 4 1.50-1.60 mm 0.059-0.063 in.   SS 29 6.14-6.32 mm 0.24-0.25 in.
  PP 10 / SS 4 1.60-1.70 mm 0.063-0.067 in.   SS 30 6.32-6.50 mm 0.25-0.26 in.
  PP 11 / SS 5 1.70-1.80 mm 0.067-0.071 in.   SS 31 6.50-6.68 mm 0.26 in.
  PP 12 / SS 5 1.80-1.90 mm 0.071-0.075 in.   SS 32 6.68-6.87 mm 0.26-0.27 in.
  PP 13 / SS 6 1.90-2.00 mm 0.075-0.079 in.   SS 33 6.87-7.07 mm 0.27-0.28 in.
  PP 14 / SS 6 2.00-2.10 mm 0.079-0.083 in.   SS 34 7.07-7.27 mm 0.28-0.29 in.
  PP 15 / SS 7 2.10-2.20 mm 0.083-0.087 in.   SS 35 7.27-7.48 mm 0.29-0.30 in.
  PP 16 / SS 7 2.20-2.30 mm 0.087-0.091 in.   SS 36 7.48-7.70 mm 0.30 in.
  PP 17 / SS 8 2.30-2.40 mm 0.091-0.095 in.   SS 37 7.70-7.93 mm 0.30-0.31 in.
  PP 18 / SS 8 2.40-2.50 mm 0.095-0.098 in.   SS 38 7.93-8.16 mm 0.31-0.32 in.
  PP 19 / SS 9 2.50-2.60 mm 0.098-0.10 in.   SS 39 8.16-8.41 mm 0.32-0.33 in.
  PP 20 / SS 9 2.60-2.70 mm 0.10-0.106 in.   SS 40 8.41-8.67 mm 0.33-0.34 in.
  PP 21 / SS 10 2.70-2.80 mm 0.106-0.11 in.   SS 41 8.67-8.95 mm 0.34-0.35 in.
  PP 22 / SS 10 2.80-2.90 mm 0.11 in.   SS 42 8.95-9.23 mm 0.35-0.36 in.
  PP 23 / SS 11 2.90-3.00 mm 0.11-0.12 in.   SS 43 9.23-9.53 mm 0.36-0.38 in.
  PP 24 / SS 12 3.00-3.20 mm 0.12-0.13 in.   SS 44 9.53-9.85 mm 0.38-0.39 in.
  PP 25 / SS 13 3.20-3.30 mm 0.13 in.   SS 45 9.85-10.19 mm 0.39-0.40 in.
  PP 26 / SS 13 3.30-3.40 mm 0.133 in.   SS 46 10.19-10.54 mm 0.40-0.41 in.
  PP 27 / SS 14 3.40-3.50 mm 0.133-0.14 in.   SS 47 10.54-10.91 mm 0.41-0.43 in.
  PP 28 / SS 14 3.50-3.60 mm 0.14 in.   SS 48 10.91-11.30 mm 0.43-0.45 in.
  PP 29 / SS 15 3.60-3.70 mm 0.14-0.15 in.   SS 49 11.30-11.72 mm 0.45-0.46 in.
  PP 30 / SS 15 3.70-3.80 mm 0.15 in.   SS 50 11.72-11.97 mm 0.46-0.47 in.
  PP 31 / SS 16 3.80-4.00 mm 0.15-0.16 in.   SS 55 12.97-13.22 mm 0.51-0.52 in.
  PP 32 / SS 17 4.00-4.10 mm 0.16 in.   SS 60 14.22-14.47 mm 0.56-0.57 in.
  PP 33 / SS 17 4.10-4.20 mm 01.6-0.17 in.   SS 65 15.47-15.72 mm 0.57-0.62 in.
  SS 18 4.20-4.40 mm 0.17 in.   SS 70 16.72-16.97 mm 0.66-0.67 in.
  SS 19 4.40-4.60 mm 0.17-0.18 in.   SS 75 17.97-18.22 mm 0.71-0.72 in.
  SS 20 4.60-4.80 mm 0.18-0.19 in.        

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