- Carved Rock Crystal, Chalcedony & Agate
- Swirled motifs
- Jeweler to the stars & Duke & Duchess of Windsor
- Jewelry Typically not Signed. Sometimes with Manufacturer’s Mark for Groà«né et Darde.
- Maison Herz
Post World War II
- Suzanne Belperron Retired
- Archives and Designs purchased by Ward Landrigan.
- Archives of Belperron’s work, rediscovered in 2007 by Olivier Baroin, allow authentication of her work by comparison to the meticulous records, models and drawings contained within.