Materials: diamonds set in platinum
- Mary Scott Townsend
- Mathilde Townsend Welles; inherited from her mother in 1931
- Thora Ronalds McElroy; inherited from her cousin in 1949
- Cartier Collection; bought at auction at Sotheby's in 1991
- Did C.Z Guest or another person own the tiara between Thora McElroy and Cartier?