OSCAR HEYMAN & BROTHERS RUBY AND DIAMOND NECKLACE

OSCAR HEYMAN & BROTHERS RUBY AND DIAMOND NECKLACE
Oval mixed-cut rubies, round diamonds, platinum, maker's mark, numbered, black Oscar Heyman & Brothers envelope pouch and white outer box

GIA, 2023, report no. 5231034234: 5 rubies tested, Burma, 5 heated, 3 with minor residues, 1 with moderate residues

Rubies: 58 oval with approximate total weight of 36.00 - 40.00 carats
Diamonds: 116 round with approximate total weight of 9.00 - 11.00 carats

Size/Dimensions: 43.8 cm (17 ¼ in)
Gross Weight: 63.4 grams