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Earth Science Current Events

Spinel: The Ruby Impostor
January 28, 2013 |

Spinel is a gemstone that has been confused with ruby and sapphire for over 1000 years. Several of the most spectacular spinels ever discovered have been mounted in “crown jewels” and other “jewelry of significance” under the assumption that they were rubies or sapphires.

  Related Stories

Volcanoes of the Rio Grande Rift
September 5, 2013 | New Mexico Bureau of Geology and Mineral Resources
The Spring issue of Lite Geology (by the New Mexico Bureau of Geology and Mineral Resources) has an article titled Volcanoes of the Rio Grande Rift, an article on volcanic hazards, another on spinel and a K-12 classroom activity on "Building a Flour Box Caldera Model". "

Photo Gallery: Ruby Falls Cave
April 6, 2014 | Weather Channel
The Weather Channel has a photo gallery that offers 21 views of Ruby Falls Cave in Tennessee. Several of the photos feature Ruby Falls, the largest and deepest waterfall open to the public in the United States.

Gemstones and Plate Tectonics
June 18, 2013 | Geology
A recent article in Geology explains how the global distributions of jadeite and ruby are strongly associated with certain types of plate boundaries.

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