Ancient Greek Rock Crystal and Amethyst Bead Necklace Circa 4th -1st Century BC Ancient Greek- Anatolian Rock Crystal and Amethyst Bead Necklace. Restrung designer necklace composed of graduated amethyst and quartz beads of fine facetted and smooth shapes including biconical, cubes, and others. 82 grams total, 60 cm long (23 5/8 in.). London collection since the 1980s. Property of a Canadian family. [No Reserve] A Certificate of Authenticity can be provided on request. The Seller can prove that the lot was obtained legally, provenance statement seen by Catawiki. The seller guarantees that he is entitled to ship this lot. The seller will take care that any necessary permits will be arranged. The seller will inform the buyer about this if this takes more than a few days.