Huge Vintage Smoky Quartz Sterling Silver Ring

Period
Vintage 
Description
Stunning vintage cocktail ring set with a large princess cut smoky quartz gemstone in a raised sterling silver basket mount.
Sitting 11mms above the finger, this is a real statement piece.
Metal
Sterling Silver
Gems/Stones
Smoky Quartz 25 x 18mms
Markings
Full set of silver hallmarks
Makers mark of E or F and O or D?
Size
UK size P
US size 7.7.5
Condition
Very good condition