* The length unit shown in the option is inner diameter. (Not thickness, outer diameter)
- Color : 14K Gold
- Inner diameter: 10mm, 12mm , 18mm
- Pin Thickness size : (21g " About 0.6mm")
- Hoop Thickness size : (16g, 1.2mm)
The most popular alloy of gold is 14K gold, which is 58.5% pure gold and 41.5% other metals like silver and copper.