Available in sterling silver, 18K yellow gold plated silver, or 18K rose gold plated silver.
The below measurements are approximate: All sizes have a 5/16" wearable. 2g has a 14mm diameter front. 0g has a 16mm diameter front. 00g has a 18mm diameter front. 7/16" has a 21mm diameter front. 1/2" has a 23mm diameter front. 9/16" has a 25mm diameter front. 5/8" has a 26mm diameter front. 3/4" has a 31mm diameter front. . 1" has a 35mm diameter front.