18k Yellow Gold Rectangular Cut 20pt Ruby, Sapphire, Emerald & 18pt Diamond Ring

18k Yellow Gold Ruby Ring Set With;

One rectangular cut genuine ruby measuring approx. 4 x 3mm, weighing approx. 20pt., One rectangular cut genuine sapphire measuring approx. 4 x 3mm, weighing approx. 20pt., One rectangular cut genuine emerald measuring approx. 4 x 3mm, weighing approx. 20pt. 

Eighteen round cut diamonds measuring approx. 1.3mm., weighing approx. 1pt. each. Total diamond weight approx. 18pt. 

May, July, September Birthstone. 
Weight approx. 8.3g.
Size 8 1/2.
Stamped 18k (as seen in photos).