Here is a pristine example of Victorian Swiss Enamel Earrings. The enamel is vibrant and shows no wear. They have a slight drop and thread through your hole from back to front and latch into a hole. They are of hollow construction. 
Dimensions: 21.7 x 11.2 mm
Metal: 14k yellow gold
Markings: none
Weight: 2 grams
Circa: 1910's 
Condition Rating: 6 (one earring is damaged and dented front and back)