Tag: gemstone

A Writers Guide to Amber

Yellow Amber

Amber is fossilized tree resin and considered an organic gemstone (like pearl and jet). It often contains inclusions such as insects and plants that were trapped in the resin before it hardened. The color is most often yellow or orange but may also be red, green, brown, and blue. Sap vs Resin: Sap is made up […]

A Writers Guide to Amazonite


Amazonite, also called Amazon stone, is a rare variety of microcline feldspar. It’s found in various shades of green to blue green. The source of amazonite’s color remained a mystery for a long time. People assumed it came from copper due to copper compounds often producing blue and green colors in rocks. Recent studies suggest […]

A Writers Guide to Citrine

Citrine is a variety of quartz. The color ranges from a pale yellow to brown. Natural citrines are rare. Most commercial citrines are heat-treated amethysts or smoky quartzes, which produces small lines in the crystal. Natural citrine has a cloudy or smoky appearance. “Ox Blood” or “Madeira” citrine is a dark, intensely saturated orangey-yellow. The name […]

A Writers Guide to Agate


Agate is a cryptocrystalline variety of silica, mostly made up of chalcedony. It’s known for its fine grain and bright colors. Agate comes in many colors: gray, white, brown, salmon, red, orange, black, yellow, violet, blue-gray, and even green and blue. It’s often banded. Agate is a porous material and may be dyed to enhance […]

A Writers Guide to Cat’s Eye

Cat’s eye, or cymophane, is a translucent yellowish chrysoberyl that exhibits chatoyancy, a luminous streak of reflected light that’s perpendicular to the direction of the fibers. This is brought about by many parallel, featherlike fluid inclusions or needle-like inclusions of rutile. The most sought after is the milk and honey variety. It’s a honey-colored stone with a milky […]

A Writers Guide to Obsidian

Obsidian is a naturally occurring volcanic glass formed as an extrusive (lava that makes it to the surface or explodes violently into the atmosphere) igneous rock. It’s commonly deep black or blackish green, but there are many varieties. The Varieties: Apache Tears are small rounded obsidian nuggets embedded within a grayish-white perlite matrix. According to […]

H.R. Sinclair © 2016
Scroll Up