The Minerals of Pre-Columbian America | Rock & Gem …
All Mesoamerican jadeite came from the metamorphosed serpentinite rock of southern Guatemala's Motagua ... If jade was the most widely used pre-Columbian gemstone, gold was the most widely worked metal. ... sunstone, or "calendar stone." This 21-ton, 12-foot-diameter, 3-foot-thick piece of solid basalt, now displayed at Mexico …
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