Neohilobites sp. Cretaceous Coober Pedy, South Australia The shells of the extinct squid-like marine cephalopod are geomorphically replaced by precious opal. Therefore they retain the shape of the once-living belemnite shell while also exhibiting the attributes of opal. This well-polished belemnite has excellent pinpoint play-of-color in white opal and is embedded in its rhyolite matrix. Length of belemnite: 2.25 inches. Overall specimen measures 4 ¼ x 3 x 2 ½ in
Neohilobites sp. Cretaceous Coober Pedy, South Australia The shells of the extinct squid-like marine cephalopod are geomorphically replaced by precious opal. Therefore they retain the shape of the once-living belemnite shell while also exhibiting the attributes of opal. This well-polished belemnite has excellent pinpoint play-of-color in white opal and is embedded in its rhyolite matrix. Length of belemnite: 2.25 inches. Overall specimen measures 4 ¼ x 3 x 2 ½ in
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.jpg "Quelle: Christie's")
.jpg "Quelle: Christie's")
