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Ultimate Crystal Stone Size Conversion Chart

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May 7,2023

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May 7,2023
Crystal Chatons

How to Measure Rhinestones, Crystals, and Pearls

“PP” (Pearl Plate) is a method of sizing originally used for pearls by placing them on a surface or plate with holes. The pearls were sized by which holes they fell through. “PP” is usually used for smaller stones. The Pearl plate has a variance of 1/10 of a millimeter.

“SS” (Stone Size) is the most current method of rhinestone sizing, although PP is still used. Some stones are labeled with both sizes.

Please note: Smaller rhinestones are measured in “PP” (Pearl Plate) and flatbacks and larger rhinestones are measured in “SS” (Stone Size).

SS Sizes

PP Sizes

Sizes in mm

SS 0

SS 0

SS 0

SS 1m

SS 2

SS 2.5

SS 3

SS 3.5

SS 4

SS 4.5

SS 5

SS 5.5

SS 6

SS 6.5

SS 7

SS 7.5

SS 8

SS 8.5

SS 9

SS 9.5

SS 10

SS 11

SS 11.5

SS 12

SS 13

SS 13.5

SS 14

SS 14.5 

SS 15 

SS 15.5

SS 16

SS 17

SS 18

SS 19

SS 20

SS 21

SS 22

SS 23

SS 24 

SS 25

SS 26

SS 27

SS 28

SS 29

SS 30

SS 31

SS 32

SS 33

SS 34

SS 35

SS 36

SS 37

SS 38

SS 39

SS 40

SS 41

SS 42

SS 43

SS 44

SS 45

SS 46

SS 47

SS 48

SS 49

PP1

PP2

PP3

PP4

PP5

PP6

PP7

PP8

PP9

PP10

PP11

PP12

PP13

PP14

PP15

PP16

PP17

PP18

PP19

PP20

PP21

PP22

PP23

PP24

PP25

PP26

PP27

PP28

PP29

PP30

0.80-0.90mm

0.90-1.00mm

1.00-1.10mm

1.10-1.20mm

1.20-1.30mm

1.30-1.35mm

1.35-1.40mm

1.40-1.50mm

1.50-1.60mm

1.60-1.70mm

1.70-1.80mm

1.80-1.90mm

1.90-2.00mm

2.00-2.10mm

2.10-2.20mm

2.20-2.30mm

2.30-2.40mm

2.40-2.50mm

2.50-2.60mm

2.60-2.70mm

2.70-2.80mm

2.80-2.90mm

2.90-3.00mm

3.00-3.20mm

3.20-3.30mm

3.30-3.40mm

3.40-3.50mm

3.50-3.60mm

3.60-3.70mm

3.70-3.80mm

3.80-4.00mm

4.00-4.20mm

4.20-4.40mm

4.40-4.60mm

4.60-4.80mm

4.80-4.90mm

4.90-5.00mm

5.00-5.20mm

5.20-5.40mm

5.40-5.60mm

5.60-5.80mm

5.80-6.00mm

6.00-6.20mm

6.20-6.40mm

6.40-6.60mm

6.60-6.80mm

6.80-7.00mm

7.00-7.20mm

7.20-7.40mm

7.40-7.60mm

7.60-7.80mm

7.80-8.00mm

8.00-8.20mm

8.20-8.40mm

8.40-8.70mm

8.70-9.10mm

9.10-9.50mm

9.50-9.80mm

9.80-10.10mm

10.10-10.50mm

10.50-10.90mm

10.90-11.30mm

11.30-11.60mm

11.60-11.90mm