Antique chequerboard ring, with sapphires and diamonds 18kt gold and Platinum.

Chequerboard ring, with alternating diamonds and sapphires. Antique ring c. 1920-30
 
Stamped Platinum and 18ct. 
The ring is a size 6.75 (UK N )
1.5/2mm Diamonds x 5 , Sapphires x 4 
The ring is in very good condition.  
Rings are shipped in ring boxes with documentation.