More ideas from Katalin
Osmium (Os)—the densest naturally occurring element (22.59 g/cm3). One cubic foot of the stuff would weigh just over 1400 lbs, or about as much as a small car!

Osmium is both the ldensest and the rarest element that you can dig out of the Earth. It’s so hard that it’s used (as an alloy) in places with constant pressure and wear, like the tips of fountain.

øpal

"Ethiopian opal geode sometimes you feel like a rock: hard, angry, damaged. But sometimes there is an opal inside you: this otherworldly beauty, the potential to be soft and loving and kind" really beautiful opal, my birthstone

Hematite crystals with calcite.

Grey Hematite ( I love seeing rocks in their raw form) Wessels Mine, Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa

bijoux-et-mineraux: “Azurite and Malachite - Bou Bekker, Oujda Angad Province, Oriental Region, Morocco ”

bijoux-et-mineraux: “Azurite and Malachite - Bou Bekker, Oujda Angad Province, Oriental Region, Morocco ”