This fold-over clasp is comprised of a 25x10mm oval plus two 11x5mm fold-over clips. 

Made of brass plated in genuine 18k gold with faceted gray agate stone.  Exact size, shape, color, and pattern may vary slightly due to natural materials and lapidary process.

Hole Size: about 2mm (features bar through the base of the fold-over clips for knotting)

Sold individually.