The best set of dactyls I have ever seen was a necklace made in Hawaii 25 years ago. The designer selected about 15 pairs of Oratosquilla dactyls graded in size from about 1 - 3 cm, capped the base of each dactyl with silver and strung them like pearls - largest pair pointing in at the center. It was truly spectacular. I wanted to buy it for my wife, but at $600, the price was too steep.
If you ever get to the Bristish Museum, in the section with Micronesian artifacts, they have many weapons (clubs, spears, throwing sticks, boomarangs) edged with large Lysiosquillina maculata and shark teeth.
Roy