How are petroglyphs made? The two basic forms of rock art are pictographs, which are pigments applied to rock surfaces, and petroglyphs, or engravings.
Rock...
Malachite doesn’t occur in wonderful prismatic transparent crystals like most minerals. Its crystals are tiny, acicular or needle-like crystals clustered so tightly the mineral...
Editor's Note: This is the second in a two-part series. Enjoy the first part >>>. Search our site for additional "Gemstones of the Breastplate" articles...
By Antoinette Rahn and Erin Dana Balzrette
"Art is born of the observation and investigation of nature."
—Marcus Tullius Cicero
As we've seen in a number of...
Editor's Note: This is the second in a two-part series about Malachite. Enjoy Part I>>>
Story by Bob Jones
One of the earliest-known sources of malachite...