This is a 9ct yellow gold sapphire and diamond wishbone ring in a size O1/2, US 7 1/2.
It is in good condition and is fully hallmarked as pictured. The band measures approximately 1.5mm in width at the back and 2.5mm at the front.  The sapphires each measure around 2mm. There are 3 small 1mm diamonds. It weighs approximately 1.5g. This will come boxed, but not the one pictured. 
 
23/10/23-1