JACOB & CO. / BM526.30.BD.BE.A
Brilliant Mystery — 38MM - Emeralds38 mm18K White Gold18 PiecesEra not confirmed
Jacob & Co. / Reference archive
Brilliant Mystery
Official Jacob & Co. reference catalogue.
JACOB & CO. / BM555.30.BD.BD.C
Brilliant Mystery — 44MM - Diamonds (White Gold)44 mm18K White Gold18 PiecesEra not confirmed
JACOB & CO. / BM555.40.BD.BD.B
Brilliant Mystery — 44MM - Diamonds (Rose Gold)44 mm18K Rose Gold18 PiecesEra not confirmed
Photographs follow the cited record. Shared source illustrations are labelled. “Current” and “Historical” are shown only where the source supports that classification; other entries are marked “Era not confirmed”. Catalogue coverage & sources