I believe this ring is vintage…
18ct Gold Sapphire and Diamond Ring.
Sapphire Diameter: 3.0mm
Total Diamond Weight Approx: 0.02ct
Setting Length x Width: 8.6 x 7.3mm
Setting Height: 6.0mm
Ring Weight: 2.3 grams
Ring Size: M 1/2
Resizing Service Offered at Small Cost
Note: Antique or vintage rings may have wear associated with the items age.