Sterling Silver Star Bead Ring. 
 
Perfect for gifting, as you do not need to know their exact size. Also, an option for fingers with swollen joints due to arthritis or hands prone to swelling. 
 
S/M has an inside circumference of about 5.5cm and will fit approximately UK ring sizes I-L
 
M/L has an inside circumference of about 6cm and will fit approximately UK ring sizes M-P