Many minerals form beautiful crystals, but the most prized of all are gemstones. Uncut gems often look fairly ordinary–like rocks. It's only when they are cut and polished that they obtain the ...

Crystals? Stones? Gems? Rocks? What’s the difference ... especially when cut and polished or engraved. Rock: The solid mineral material forming part of the surface of the earth and other ...

Let’s explore the deadliest crystals, minerals, and gemstones that ... arsenopyrite looks like a shiny, metallic gem that could be used for jewelry. However, this mineral contains arsenic.

As the Gem and Mineral show returns to Tucson, some vendors saw fewer crowds and sales compared to past years as consumers ...

While these crystals are probably similar in shape to the pointy hexagonal prisms found in geodes and gem shops on Earth ... of one centimeter. Unlike mineral particles found in clouds on Earth ...

Russell and Missy Carhart, co-founders of Hart Events and managers of Eons Expos, hope to attract younger audiences and raise ...