A pair of diamonds that formed hundreds of kilometers deep in Earth’s malleable mantle both contain specks of materials that form in completely opposing chemical environments—a combination so unusual ...

Brilliant-blue sapphires look like bits of sky brought down to Earth — but a new study finds these gemstones are from a different boundary: the one between the planet's crust and magma welling up from ...

Provided you have ever been amazed by the shine of a diamond, then there must have been a moment when you questioned how it entered your jewelry box instead of remaining under the Earth’s surface.

Nature has a lot to offer to humans. Most precious jewelry is made from metals and stones buried deep within the Earth’s surface but the discovery of these rare jewels is not just limited to land. The ...

If you buy through a BGR link, we may earn an affiliate commission, helping support our expert product labs. Pink diamonds are some of the rarest gems you’ll find on the planet. In fact, these ...

Celebrated Place Vendôme jeweler Van Cleef & Arpels collaborates with the Muséum National d’Histoire Naturelle (MNHN / National Museum of Natural History) in Paris to present the exhibition Gems ...

What is a gem? -- How gems form -- Crystals -- Classifying gems -- Physical properties -- Optical properties -- Where gemstones are found -- Mining gemstones ...

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.

A new study of sapphires found in volcanic fields in Germany reveals that these beautiful blue stones form where magma and rocks from Earth's crust mix. When you purchase through links on our site, we ...