Sterling silver and Sapphire ring. Size 7

Sterling silver and blue sapphire ring. Size 7 Stamped 925 Sterling Can't make out a maker's mark. There are 5 dark blue princess cut Sapphires channel set on top of ring. I do not know the carat weight of the sapphires. It weighs 6.1 grams. There are some scratches on the band due to wear. Please review pictures carefully as they are part of description.