The Tiny Stud Earring from Parts of 4, Paris France. 

Details
.1 carat diamond slab
Brushed silver
DIRTY STERLING:
Sterling silver, dipped in acid to create a subdued surface. Results will never be identical, and this nuance / variation should be seen as a characteristic of the uniqueness of the product.
ROUGH DIAMOND:
The stones used in this item are cuts of diamond material that are removed from a larger chunk of diamond as they are attempting to get to the perfect diamond in the center. Each stone fragment and shape are absolutely unique.