African Jade, Spotted Jasper, Freshwater Pearls and Pewter Necklace

Large natural stone pendant - possibly agate - with spots of green, turquoise, browns and tans in a swirly mix. Domed front, flat back - high polish, clear inclusions. Necklace is a mix of spotted jasper ovals, high grade African jade, and pale green-taupe freshwater pearls accented with green blue glass seedbeads and pewter saucers.
Clasp is a silvertone pewter "S" hook
Approx. 19"
Pendant hangs approx. 2".
Pewter beads are a Zinc alloy over copper that may (or may not) change color with wear - it seems to depend on body chemicals individual to each person