Vintage Ruby Diamond 18ct White Gold Ring

Vintage Ruby Diamond 18ct White Gold Ring 
Ruby 
Oval shaped mixed cut ruby, measuring 5.6 x 3.9 mm, weight 0.42 metric carat, pinkish-red in colour, moderate inclusions 

Diamonds 
Each shoulder grain set with 6 round brilliant cut diamonds measuring 1.6mm in diameter. 
Total diamond weight 0.20 metric carat, colour assessed H/I, clarity assessed VS-SI 

Setting 
Fully rub over setting to the ruby with an oval yellow collet attached to heavy court shaped white shoulders. 
Ring White "D" shaped cross sectioned plain polished shank. 
Stamped 750, 18ct white gold 
Weight 5.5 g 
Ring size L 1/2 (British) 
Very good condition pre-owned condition. 
Complete with fully independent insurance valuation by the Birmingham Assay Office from 2018.