Sterling Silver Statement Ring 7 Red Pear Oversize

Statement Sterling Silver Cocktail Ring with Clear Square Center + Red Pear Accent Stones Preowned ring stamped with a hallmark on the inside of the band. The hallmark is unknown to me. There is no purity mark that I could see I have tested the setting and it does test positive for high quality silver. The center stone is clear and I am not sure if it is just glass or is a CZ. The little red accents are pear shaped. Size 7 Square stone size 1" x 1"