Vintage hand carved genuine graduated striped malachite beads necklace

Gorgeous, massive, vintage 60s-70s graduated malachite beads necklace, hand knotted with silver metal barrel clasp, the beads are slightly uneven as they are hand carved, graduated from 7 to 16 mm in size, they show beautiful stripy green pattern, overall in great pre-owned vintage condition, some imperfections to a couple of beads as seen in the photos, comes from a non-smoking environment, can be worn overhead, 56 cm long.