From the tombs of pharaohs to Roman frescoes, Egyptian blue adorned everything from sacred artifacts to everyday pottery.

Washington State University researchers recreate lost Egyptian blue pigment using ancient methods and modern scientific ...

Conservation scientists and archaeologists with direct knowledge of the use of Egyptian Blue took part in the new study and ...

Yooperlites can be found as loose pebbles and cobbles along many Lake Superior beaches and even in some inland gravel pits.

The launch of these Mineral Glass lenses marks a significant engineering milestone for Gunnar, as they are the only blue light-blocking glasses with mineral glass lenses available today.

None of these tales are true, Wiedenbein says, and in fact, Leland Blue stone is not actually a stone at all — it’s an industrial glass called ... to extract minerals and produce refined ...

Tinted blue and clearly old, the heavy glass bottle is imperfect with numerous bubbles frozen forever in the medium. A surprising embossed brand on its body: Zarembo Springs Mineral Co., Seattle ...

Sodalite is a deep blue to blue-violet mineral best known for its use in jewelry, sculpture, and decorative stonework. Sodalite forms in igneous rocks that crystallized from sodium-rich, silica-poor ...

rather than the mineral itself. As with other forms of obsidian, rainbow obsidian is both rock and glass. However, this isn’t the same kind of glass that’s used in your nice new French doors.

Without severe weather, minerals can sink the bottom allowing for a blue tint, caused by the way ocean water absorbs light, to flourish. "If you take a glass of water and just put a teaspoon full ...