Weave Shape Gauge ID (mm) RPI
Persian, Round 16g RD 16 6.500 18.5
Persian, Round 18g RD 18 5.250 24.4
Persian, Round 20g RD 20 4.250 30.8

As with all of our work, we invite you to make and sell as many of everything as you like, but ask that you don't publish our instructions or ring sizes.