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Rubies are the stones of folklore and mystery. Often fiery red and
reflecting an extraordinary depth of color, ruby is said to resemble
the heart and is able inspire the passions of love. This stone is
often associated with masculinity and strength though it is said to
also represent passion and strength in women. A member of the
corundum family of crystals, ruby has a long and storied history much
like its mineral cousin the sapphire. These brilliant stones can be
found in many parts of the world including areas of Southeast and
Central Asia, Africa and the Middle East, though the finest quality
stones are said to come from Thailand and Burma. Red corundum is
nearly as hard as diamond and is highly prized for this quality.
History
Next to diamonds ruby is considered by many to be the most valuable
gemstone in the world. The deep red color of these stones was long
prized by royals and monarchs throughout Asia and the Middle East and
the history of this dates back thousands of years.
Ruby is similar to other stones comprised of corundum like sapphire.
The color of this stone is said to come from various levels of iron
and chromium that is present and varies from pinkish red to deep red.
In fact, lighter shades of ruby are often classified as pink
sapphire. The early twentieth century saw the first synthetically
manufactured corundum stones and was originally done to supply a
growing industrial market for crystal substances that were hard
enough for grinding metals. Industrial corundum is made from bauxite
and can be seen commonly used as the abrasive known as emery. It was
not long before synthetic gemstones were being made and offered for sale.
The differences between a naturally-occurring stone and a
manufactured stone are very subtle is very difficult to determine
with the untrained eye. Only a person well-trained in gemology can
make such a determination. Genuine, gemstone quality ruby can be
quite expensive and buyers should be wary of stones that are offered
at a discount price.
Birthstone Information
This stone represents the birth month of July and is associated with
several astrological birth signs such as Sagittarius, Scorpio, Leo
and Cancer.
New Age Beliefs and Powers Through The Ages
These stones have long been held up as sources of beneficial powers.
As with many other gemstones and crystals, ruby is thought to give
the wearer powers of immortality and strength of heart. Still other
beliefs hold that the bearer is protected from the effects of
witchcraft and the evil wishes of others. The bearer is said to be
safe from poisons and the strength of heart gives the bearer the
power to make peace with ones enemies.
Some General Scientific Information
The chemical name Al2O3 otherwise referred to as aluminum oxide with
traces of iron or chromium.
The hardness is 9 on the Mohs scale - the Mohs scale measures the
hardness of metals, minerals, gemstones and crystals on a scale of 1
to 10. For example the hardness properties of most quartz crystals
fall around 7 on the scale, as does steel and titanium. Diamond is
the hardest known substance on the Mohs scale coming in at a hard 10.
To most consumers hardness generally reflects the stones able to
resist scratches and cracks.
There are several artificial forms of enhancement used on these
stones. Heat is often used to enhance the color of these stones and
the average buyer would be unaware if this technique was employed.
Imperfections are sometimes filled.
There is no cleavage.
Birefringence is weak and ranges anywhere between 0.007-0.010.
Refraction index ranges between 1.757 - 1.779.
The specific gravity is 3.98 - 4.1.
The crystalline system is hexagonal. |
