Product details and dimensions:
Also, you may be interested
https://www.cgtrader.com/3d-print-models/jewelry/necklaces/diamond-lobster-clasp-lock
https://www.cgtrader.com/3d-print-models/jewelry/necklaces/ball-necklace-clasp-lock
https://www.cgtrader.com/3d-print-models/jewelry/bracelets/cuban-link-chain-bracelet-set2