Tiffany & Co, Fabulous and rare Antique pendant featuring a 45 carat, Rectangular, Step-Cut Natural Yellow Sapphire, No Indications of Heat! See GIA Certificate attached. The sapphire is mounted in platinum, with marquise and round, old mine cut diamonds on an 18" platinum chain
 
Designer: Tiffany & Co.
Weight: 18.5 grams with chain
Pendant Length: 1.5"
Width: 18.7mm widest point
Main Stone: Yellow Sapphire
Diamond Weight: Approx. 0.50 CTTW
Metal Purity: Platinum
Hallmarks: Tiffany & Co.
Era: Early 1900's
Condition: Excellent