FAQRhinestone size Login
The two most common gauges for rhinestone sizes are ’ss’ (stone size) and ‘pp’ (pearl plate). The original rhinestone sizing (’pp’) was based on the technique of pearl sizing. Back then, pearls were placed on vertically stacked plates with a series of graduated holes punched in them. As the pearls fell through the holes, they were sized (and priced) according to the last plate they landed on. This is where the designation ‘pp’ comes from. Subsequently, jewelers developed their own sizing formula called ’stone size’ or ’ss' which essentially achieved the same goal, but used a different scale.
In order for manufacturers to keep us on our toes, the ‘pp’ and ’ss’ scores are meant to indicate a size range, not an exact size.

PP size SS size size(mm)
14PP SS 6 2.0 - 2.1
15PP SS 7 2.1 - 2.2
16PP SS 7 2.2 - 2.3
17PP SS 8 2.3 - 2.4
18PP SS 8 2.4 - 2.5
19PP SS 9 2.5 - 2.6
20PP SS 9 2.6 - 2.7
21PP SS 10 2.7 - 2.8
22PP SS 10 2.8 - 2.9
23PP SS 11 2.9 - 3.0
24PP SS 12 3.0 - 3.2
25PP SS 13 3.2 - 3.3
26PP SS 13 3.3 - 3.4
27PP SS 14 3.4 - 3.5
28PP SS 14 3.5 - 3.6
29PP SS 15 3.6 - 3.7
30PP SS 15 3.7 - 3.8
31PP SS 16 3.8 - 4.0
32PP SS 17 4.0 - 4.1
33PP SS 17 4.1 - 4.2
SS 18 4.2 - 4.4
SS 19 4.4 - 4.6
SS 20 4.6 - 4.8
SS 22 4.9 - 5.1
SS 23 5.1 - 5.3
SS 24 5.3 - 5.5
SS 29 6.1 - 6.3
SS 30 6.3 - 6.5
SS 32 6.7 - 6.9
SS 34 7.1 - 7.3
SS 40 8.4 - 8.7
SS 42 8.9 - 9.2
SS 47 10.5 - 10.9
SS 48 10.9 - 11.3