Set of three, Tiffany & Co. Etoile Rings, two with emerald center (4.5mm) and one with sapphire center (4.5mm) set in 18k yellow gold half bezels. Platinum rings each containing 36 round brilliant cut diamonds, E-F color, VS clarity, pave set in half round shank 
 
Designer: Tiffany & Co 
Weight: 17.7 grams 
Width: 4.7 mm each at widest 
Size: 6 
Main Stone: Diamond 
Diamond Weight: (108) Approx. 2.25 CTTW
Metal Purity: Platinum 18k 
Hallmarks: Tiffany & Co PT 750
Era: 1990's - 2000's 
Condition: Preowned, Excellent