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The Dailyatia earrings represent the C1 sclerite of Dailyatia helica, a small shelly fossil (SSF) of the clade Tommotida originating from the late Cambrian period. Small shelly fossils are a diverse group of mineralized fossils representing the ancestors of marine invertebrates like snails and sea urchins. While some SSFs are an intact version of the original organism, most represent only a fragment of the marine creatures they once were. In the case of Dailyatia helica, one organism consisted of 30 of the intricate, grooved, helical-shaped structures that I've recreated as an earring. (Reference: Skovsted, CB, Betts, MR, Topper, TT & Brock GA, Memoirs of the Association of Australasian Palaeontologists 48:1-117,2015)
Earrings do not ship from Shapeways with earring hooks. You will need to purchase hooks yourself. The ones shown in the photos are rose gold-plated sterling silver. Each earring weighs approximately 3.7g.