A Vintage Plum Sapphire and Diamond Platinum Engagement Ring, c. 1925. The milgrain platinum ring features a 5.41 ct natural sapphire with an unusual bluish-purple color. The sapphire is framed by 16 sparkling old European cut diamonds, the shoulders set with six old rose cut diamonds.
SAPPHIRE AND DIAMOND RING, OSCAR HEYMAN & BROTHERS. Claw-set with a cushion-shaped sapphire weighing 17.84 carats, within a line of pear-shaped diamonds, further decorated with brilliant-cut stones, mounted in yellow gold and platinum by BLOOMS68