What Gives Green Gems Their Color? A Look Inside the Science
You’ve likely admired the vivid green of gemstones. You may ask: What causes the green color in gemstones?…
Expedition Archive
Mark Rober
Mark Rober is a wilderness explorer, alpine hiker, and travel photojournalist with over a decade of backcountry expedition experience. Specializing in scenic road trips, remote national park trails, and real-world gear testing, his field guides help modern travelers navigate the outdoors with confidence.
