Default image shows polished silver.
It can choose from various materials.
The default size is 20.6 mm inner diameter but you can customize the size to your liking.
Click personalize to choose your US ring size.(Size support: # 7 to # 13.)
The brick can be attached by all the sizes.
Please refer to a this page.
Conversion chart for ring sizes
US Ring Size Inside diameter 7 17.3mm