Dangling blueberry ombre earrings with  a 8mm freshwater pearl end.
The size of a single blueberry is about 1-1.2cm. The length of the chain on each side can be adjusted. The full length os the earring is about 5cm.
The colour of blueberries are dyed with fabric dyeing liquid by hand. Thus the colour may slightly different from the one in the photo. 
The stud in the photo is plated in gold, the round plate of stud is made of stainless, and the post/catch is brass.
Hypoallergenic studs are also available: the round plate is brass and post is titanium.