The listing, Lot of EIGHT (8) Rings, includes 925 has ended.
Collection Lot of 8 Rings
3 Gorgeous Sparkle Bling Rings, sizes approx
Size 7.5 - Red - hallmarked "925"
Size 8 - Clear stones
Size 7.5 - Yellow - marked "S925"
AND
Pair of adjustable size Rings - Red and Turquoise
Size 9 big Eagle with black background and lightning bolt on sides ring
Size 9 chunky heavy hammered design wide cigar band ring
Size 6 chunky rows of clear stones alternating with circular silver design rows (missing stones)
These are not marked as sterling silver so I would say they are fashion/costume rings. I don't test metals or stones.