10K White Gold Anklet With Sterling VTG Turquoise Pendant

Purchased at estate sale. I tested the chain and the clasp that closes is not gold but the chain is 10K white gold. Pendant and chain are marked. I wondered did someone replace the clasp along the way. It does appear to be vintage. It’s a wear to the beach piece! . I have had it awhile and kept it in the shell that is also vintage and is trimmed in sterling silver. Shell is sold separate and I am also listing it. Measurements of anklet shown. #jewelry #turquoise #turquoisependant #vintagejewelry #anklet #sterlingsilver #jewelry