Fine Natural Hawaiian Puka Shell Necklace with Turquoise

This necklace is strung with very fine totally natural Hawaiian puka shells from the 1970s. They have natural holes, were bleached by the sun and polished by the sand and sea. Nice shine and the average a diameter of 13.5 mm. The three turquoise beads are reconstituted. It has its original gold tome barrel clasp. It is kind of hard to worj the clasp because the shells are large and kind of get in the way. 

Measures 14" long. Weight: 70 grams. High grade shells.