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Tag: gemstones

January 1, 2020March 31, 2021 BJ Deming

Guest Video: Birthstones

November 6, 2019May 1, 2021 BJ Deming

Metamorphic Gem: Garnet

October 23, 2019March 31, 2021 BJ Deming

Repost: Zabargad: Island of Green Stones

March 7, 2018April 1, 2021 BJ Deming

Guest Video: Peridot, A Mantle Gem

Recent Posts

  • Lahars, Part 2: Nevado del Ruiz, 1985 May 16, 2021
  • Writing Update May 13, 2021
  • Writing Update/Martian Volcanoes May 8, 2021
  • Guest Videos: You’ve Got to See These Iceland Volcano Videos May 4, 2021
  • Lahars, Part 1: The Long-Distance Killer May 2, 2021

Ad Astra Basic Geology CatChron Cats Critical minerals Decade Volcano Dinosaurs Disasters evolution feline Friday Geology You Use Every Day Geopark of the week Geoscientist of the Week Hazards Iceland Mantle Gems Minerals and elements Ooh . . . Shiny! Sabertooths Solar System Saturday Sunday Morning Volcano supervolcanoes Uncategorized volcanoes Writing update Yellowstone

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Top Posts & Pages

  • Lahars, Part 2: Nevado del Ruiz, 1985
  • Famous Stones of the British Crown Jewels
  • Iceland Updates
  • Repost: How Emeralds Form
  • Species Fact: Rusty-Spotted Cats
  • Tracking Down Pseudaelurus
  • James Croll: Timing is Everything
  • Cats, People, and Ice Ages: "Felis lunensis"
  • Hawaiian Volcanoes: The Big Island 5
  • Species Fact: Pampas Cat

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