This earring comes in three sizes:

Small: pendant 7 mm [0.27 inch] | hoop 11 mm [0.4 inch]
Medium: pendant 14 mm [0.7 inch] | hoop 13 mm [0.5 inch]
Large: pendant 19 mm [0.74 inch] | hoop 13 mm [0.51 inch]

Note that this earring is sold by piece not by pair

How to treat your jewelry: About