Dark Smoky Quartz Ring, Size 6.75

Vintage sterling silver ring with a huge round cut smoky quartz ring. The center stone is really dark in color and is flanked by a small cubic zirconia on either side. All three stones are prong set in a way that they are suspended in the air. Simple, elegant style. Condition: Very good vintage condition with some light signs of wear.  ***All jewelry is lightly cleaned and earrings are disinfected. Personal preferences vary greatly for the amount of patina on vintage jewelry, therefore I only lightly polish with a sunshine cloth as needed. Size: The band size is 6.75 and the stone is 9/16" in diameter.  Marks: 925 and an unidentified makers mark