The large beads in these stitch markers are rounds of tiger eye (stone) dyed a lovely dark blue, with smaller rounds of red-dyed tiger eye and glass accent beads in pearlescent white. The end marker has one accent bead in silvery grey instead of white.
These stitch markers are made with black beading wire. I can’t guarantee them as snag-free, but the ends of the wire have been filed as smooth as possible, and they should not be a danger to your knitting.
This listing is for a set of 4 stitch markers. The 6-mm (US 10) needle is shown for scale only.