Beautiful Hutsul chepragi clasp for necklace was made in Ukraine.
Chepraha - traditional clasp amulet of Hutsuls - the indigenous population of the Ukrainian Carpathian mountains. Chepraga is a solar symbol designed to protect a person from evil spirits. 

Vintage multi Strand Hook lock for jewellery making, for necklaces, corals, clothes. 

 Brass, casting, engraving. 

Dimensions: 89x35 mm (3.6" x 1.4"), weight about 15 g.