See reviews below to learn more or submit your own review. Polaris GEM is a manufacturer and seller of street-legal, low-speed vehicles. These all-electric vehicles can last up to 98 miles on a ...

Admission is free to most events, but bookings will be required… Whether you're searching for a $5 shimmering crystal necklace or a $200,000 show-stopping specimen from a remote corner of the world, ...

A look at the history of analytical instruments used for gem testing. UV-Vis-NIR spectroscopy measures how gemstones absorb and interact with light across the ultraviolet, visible, and near-infrared ...

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