Ruby Vs. Rubellite

••• Thomas Northcut/Photodisc/Getty Images

Ruby and rubellite are both rare translucent minerals which come in a range of red shades that are used in jewelry and can be found across the world. They differ in a variety of ways including composition and source location.

Classification and Chemical Features

Rubellite is a variety of elbaite [Na(Li,Al)3Al6(Bo3)3 Si6O18(OH)4], which is a variety of tourmaline, while ruby is a type of corundum [Al2O3] with chemical inclusions of chrome providing the red color.

Mineral Structure and Hardness

The mineral shape of rubellite is classified as ditrigonal pyramidal and ranges from 7 to 7.5 on the Moh's scale (a relative hardness scale on which diamond is a 10).

The mineral shape of ruby is classified as hexagonal scalenohedral and is a 9 on the Moh's scale.

Color

Rubellite can range from violet and pale pink to deep pink red or red. A rubellite is the same color in both natural and artificial light. Ruby can range from bright red to dark red-brown in color. The most desirable color for rubellite is a deep red or pinkish red, while the most desirable color for ruby is a deep red called pigeon's blood.

Inclusions

Inclusions are common due to the way rubellite forms. Small inclusions that do not interfere with the overall translucency of the rubellite can increase its value. Inclusions can also enhance the value of rubies, and a rutile inclusion can give a ruby the opportunity to be cut into a star ruby, a rare form of ruby.

Considerations

Rubellite is a rarer gemstone than ruby.

Sources

Major sources of rubellite include Maine, Madagascar, Brazil and Afghanistan. Major sources of ruby include Burma, Thailand, Tanzania, Kenya, Afghanistan, India, Madagascar, Australia and Sri Lanka.

Related Articles

What Colors Are Geodes Naturally?
How Is Tourmaline Formed?
Difference Between Quartz & Calcite
How Sapphires Are Formed
What Is Tanzanite Quartz?
Where Is the Mineral Topaz Found?
How Are Opals Made?
Where are Rubies Mined?
Where Is Ruby Found as a Natural Resource?
What Is the Mineral Beryl Used For?
Three Major Types of Meteorites
Information and Facts on Opal & Moonstone
How Are Lab Created Rubies Made?
What is a Sardonyx?
Interesting Facts About Garnet
What Precious Gems Can Be Found in Texas?
List of Rare Minerals
Gems & Stones Found in Indiana
How Do Rubies Form?
Gems Native to Connecticut

Dont Go!

We Have More Great Sciencing Articles!