From the Retreat’s trove of curiosities: a necklace that looks as though it was bartered off a Spanish saint, then promptly stolen back by a Riviera heiress.

Forty inches of gleaming gold-plated chain tumble easily about the neck, carrying two companions in cahoots — a frilled ex-voto heart, glowing with old-world devotion, and a red Swarovski crystal, the precise shade of a late-night confession (or perhaps a very fine claret).

Light as a whisper, long enough to knot or double, and guaranteed to invite questions you’ll enjoy not quite answering.