1.5mm Solid Cable Chain Necklace Extender or Safety Chain - 3 Inch Silver & Gold Plated Jewelry for Necklace Adjustments & Security | Perfect for Layering, Pendants & Custom Fit

Perfect for creating a safety chain for a diamond necklace that kept unlatching. Because it was a latch rather than a round spring clasp, I also needed a small gold jump ring to attach the chain extender to the chain necklace. The solid gold is worth it for solid gold jewelry because gold fill or plate very soon stands out against solid gold jewelry, as I found by trying.