The 6-7th century Alton Anglo-Saxon buckle
 
A silver gilt body with sub-triangular shape, filigree wire and niello, set with cloisionne garnets and glass. The centre panel of semi zoomorphic design is gold filigree on a gold repousse base.
 
The buckle is from Grave 16 of the Mount Pleasant Anglo-Saxon cemetery in Hampshire, southern England, and was found during excavations there between 1959-61.
 
More here.