Sarasota Sea, Bottled in a Chain

A Ceylon sapphire — the kind of stone that turns up in estate sales from Palm Beach to Naples — anchors the latest bauble to carry a French house's unmistakable house grammar without spelling out the name. Around here, that's less a riddle than a dress code: the good stones do the talking, and everyone in the room already knows how to read it.

With reporting from Robb Report.