Rose Quartz, Semi Precious Stone and Costume Necklace

This necklace is in shades of pink, burgundy, brown and beige with some costume (crystal?) beads and a clasp that appears to be sterling silver, although I cannot find the 925 stamp. It is mainly comprised of beads made from rose quartz, as well as a secondary semi precious stone that looks like either red/pink jasper or rhodonite or something similar. Stretching the necklace out is is just over 19 inches, including clasp. I