NEW Table Mountain shadowkite graduated necklace with 925 clasp

This is a brand new necklace without original tags or packaging.  Table Mountain shadowkite beads in graduated sizes from 6mm to 10mm. Necklaces measures 18 inches in length with a 925 sterling silver lobster claw clasp. Extension chain adds another 2 inches if desired. Unbranded. Made in India. Estimated retail value is $310.  Shadowkite is mined in the Table Mountain range in Cape Town, South Africa. A rare combination of four minerals that include malachite, chrysocolla, cuprite, and azurite. Reasonable offers considered