Turquoise is wonderful gemstone that is valued for making jewelry. Its an opaque,
blue-to-green mineral that is a hydrous phosphate of aluminum and copper. The finest grades rare and
valuable, having been cherished as a gemstones for thousands of years, strongly because of it's unique
hue. Turquoise was used in grand collars back in the Egyptian era of the Pharaohs and even adorned the
icon golden burial mask of King Tut.
Turquoise, has been somewhat devalued as of late by the introduction of treatments, imitations, and
synthetics onto the market. Lower grade Turquoise with many fractures is often saturated in resins to
"stabilize" the stone and bring out the luster of its coloring.
Although most Americans are most familiar with Turquoise deposits coming from the Southwestern states within the
United States, the mineral is mine in many places around the world. Substantial sources have been mined for
centuries in Iran and the Sanai Peninsula. Additional, deposits of Turquoise also come from China,
Afghanistan, Australia, Chile and India. Sources in the United States are most often found in the states of
Arizona, California, Colorado, New Mexico, Nevada, and even in Virginia, where single-crystal specimens were first
discovered in 1912.
Turquoise tumbled gemstone
Rough Turquoise in Rock (Smithsonian Institute)
Turquoise Tumbled Pebble
Color: Sky blue,
blue-green, apple green
Mohs' Hardness Scale: 5 to 6
Density: 2.31 to 2.84
Transparency: Opaque, translucent