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Natural sapphire can exhibit asterism or "stars" on surfaces of stones with round-cut surfaces
the Touch version of the Third Edition is limited to just 300 pieces
3 billion years old
" 2018 AIAA SPACE and Astronautics Forum and Exposition
crossing numerous cultures
Maiasaura Vertebra - SOLD 1.91" Fossil with Stand triceratops Natural sapphire can exhibit asterismMaiasaura was a large Ornithischian dinosaur from the Cretaceous Period. Related to Iguanodons, they are known primarily for nurturing their young past hatching, a behavior previously unknown of any dinosaur. The Maiasaura and its Hadrosaur cousins had specialized "duck bills" for mouths. These were in fact elongated rostral bone structures that gave the appearance of a beak, but actually housed hundreds of small teeth to grind through all manner of
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