Researchers said some gemstones found in pegmatite rocks took just minutes to form Some of them grew at a rate of up to three feet a day Pegmatites are extreme igneous rocks formed in the Earth's ...

When I was a kitten, I loved collecting rocks and gems. So, I was very excited to talk about your question with my friend Johannes Haemmerli. He studies minerals at Washington State University.

Scientists have uncovered the origins of sapphires, revealing that these stunning blue gemstones form deep within the Earth's crust through volcanic activity. Research led by geologist Axel Schmitt ...