Silver multi row Swarovski Gucci style, set on a 15 mm ring with 2 -10 mm prones.  This clasp closes on the spring ring.
 
 As previously mentioned, depending on the gemstones size, this clasp can accomodate 4 rows of 6 mm gemstones  or 6-8 rows of smaller size beads.
 
See below the options for quantity, size and price.