Antique Platinum, Sapphire, and Diamond Ring

centering on a cushion cabochon sapphire (10.88 x 10.38 x 8.66 mm), original to the mount, and weighing 9.46 carats (actual) and the open carved and milgrain mount bead set with old mine cut diamond melee and the shank with bead and engraved detailing, testing platinum. With three reports: 1.) AGL Document stating Natural Corundum / Sapphire with no gemological evidence of heat or enhancement, Kashmir as country of origin. 2.) SSEF Gemstone Report stating antique cushion Sapphire / Natural Corundum with no indications of heating and Madagascar as country of origin. 3.) Gübelin Report Natural Corundom / Sapphire with no indications of heating and Sri Lanka (Ceylon) as country of origin and with 85.1 / Excellent Gemstone Rating.

13.0 x 15.5 mm; Ring size 4

3.4 dwt.

AGL Document Number 1144123 dated 15 November 2024
SSEF Gemstone Report Number 143087 dated December 19, 2024
Gübelin Gemmological Report Number 25012147 dated January 29, 2025

From the Estate of the late Elizabeth Pratt, a New York Socialite

The ring was gifted by John McKee Stratton to his bride, June Love Stratton (1896-1980), of Greenwich Connecticut and by descent to her daughter, Elizabeth Pratt (1928-2023).


Good estate condition; diamonds with age appropriate nicks and some significant chips.

$6,000 - 12,000