14k White Gold Swivel Trigger Clasp.
Attached ring is OPEN to be used as a jump ring.
Stamped 585

6.5x19.3mm (1/4"x3/4")  Ring ID 3.3mm  
  
Weight:
0.935 DWT (1.45 grams)

RHODIUM PLATED.
That is a very thin layer of the most valuable precious metal over solid 14k gold.
This has a brilliant shine like chrome or freshly polished sterling, vs a yellowish white gold.
Almost every high end or designer white gold item is rhodium plated.