Natural pearl necklace, composed of one hundred and forty four natural pearls graduating from approximately 2. 85 to 6. 65 mm, to a 14ct white gold clasp. Length approximately 590 mm. Accompanied by a Mineralogical Services report and X-ray numbered cmS73/2/8, dated 17 February 1973, stating that the three largest pearls, and one smaller pearl chosen at random are all natural pearls and all show clear Lauegram patterns in two directions.