Colored
Gems
Alexandrite
Discovered in Russia in the early 1800s, alexandrite is named for Tsar
Alexander II and was the national gemstone of tsarist Russia. With an
ability to change its color from green to red depending on the light
source, alexandrite is a very unique and beautiful gemstone. A Mohs'
hardness rating of 8.5 makes alexandrite a very durable and trouble-free
gemstone.
Amethyst
Amethyst was a valuable gem until the discovery of large deposits in
South America in the late 1800s; Brazil is the primary exporter to this
day, although it is common in many countries. Still, its deep and attractive
color makes it extremely popular. Banding - darker and lighter zones
of color - is quite common. A good amethyst will be very clear, and
the deeper the color, the better. The most common enhancements are heat
and irradiation. Try not to expose an amethyst to excessive amounts
of bright sunlight, as this can fade its color.
Perhaps the most unusual magical power ascribed to the amethyst is its
ability to prevent drunkenness. It also is supposed to bring peace of
mind to the wearer, and if properly carved, prevent fatal poisoning.
In some legends, it represented piety and dignity.
Amethyst is the birthstone for February.
Aquamarine
Although aquamarine comes in many colors, the most prized is a rich,
clear, watery blue. Fairly large and clear aquamarines with good color
are among the more valuable semi-precious gems. They are often given
step cuts, also known as "emerald" cuts, much like aquamarine's
mineral sister, emerald. Good clarity is important in these stones,
especially lighter ones where flaws will be more visible. Brazil is
the primary source of aquamarine, although it is mined in other places
as well.
Aquamarine has long been a positive stone according to legend, bringing
with it health, hopefulness and youth. It was traditionally a favorite
of sailors, and is said to be a good choice for anyone who loves the
sea. It could also bring love and affection if worn properly. Its supernatural
powers were remarkable; legend has it that a person with an aquamarine
in his or her mouth could summon the devil and get questions answered.
Aquamarine is March's birthstone.
Blue
Topaz
Topaz, and especially blue topaz, has grown in popularity over the years.
The "pure" topaz color is yellow, and was often confused with
chrysolite, the yellow variety of peridot. However, the use of distinct
colors has helped topaz come into its own. Blue topaz in particular
is popular in jewelry today. It has a watery blue similar to aquamarine,
but often without the green overtones, and its hardness and good clarity
make it an excellent gem. The blue color is often enhanced through heat-treatment
and irradiation.
Sapphire
Genuine
sapphires, including Ceylon sapphires are part of the Corundum gem family
and are second only to diamonds in hardness. This strength makes them
an excellent choice of jewelry because of their durability.
Ceylon sapphires are mined primarily in Sri Lanka (formerly Ceylon).
The sapphires mined in Sri Lanka are known for the unique color they
produce. Because Ceylon sapphires occur naturally, the color of the
stone varies.
Colors range from very pale blue to the most vibrant, almost electric
blue hue. Our collection of genuine Ceylon sapphires has been chosen
from the middle of the color spectrum, capturing the heart of the color
in its lustrous, soft blue color, with just a hint of lavender. This
collection has been designed exclusively for Zales.
Often,
sapphires used in jewelry are heat-treated or given chemical diffusion
to enhance their color, these enhancements are permanent.
Sapphire is the birthstone of September
Citrine
Citrine
is a clear yellow form of quartz and is often confused with yellow topaz;
citrine, however, is more abundant. Because of its abundance, there
are plenty of fairly large, clear stones available for jewelry. Clarity
and a rich yellow color are keys to look for in a citrine. It has some
of the same characteristics as amethyst, such as alternating bands of
lighter and darker color, but these bands are harder to see in citrine.
Citrine often comes from Brazil.
Citrine is a cheerful gem. Its powers are said to include making its
wearer lighthearted, bringing cheerfulness in tough times and offering
hope. It was also believed to help relax people and expel impurities
from the body. People who wore citrine could expect to look healthy
and feel happy.
Citrine is the birthstone for November.
Emerald
Emerald
is one of the most valuable gems on the market. The brilliant green
of a fine emerald is unmatched by any other stone, and the extreme rarity
of top-quality emeralds - the most prized emeralds come from just a
handful of mines in Columbia - make it fairly costly. However, there
are supplies of emeralds coming out of other mines.
Almost all emeralds have inclusions in them; the fewer these impurities,
the rarer and costlier the stone. Because of these inclusions, emeralds
can be brittle, so protect your emeralds from hard contact when you
wear them. Ultrasonic cleaners, which use vibrations to remove dirt
and buildup, can be dangerous to heavily included emeralds. Natural
emeralds also tend to have thin scratches on the surface. A layer of
wax or oil is usually applied to smooth out their appearance and enhance
their color. This layer may have to be replaced professionally every
few years.
It was believed to sharpen wits, bring wealth, foretell the future,
tell whether a lover was lying and cure all types of evil and illness.
Emerald is the birthstone of May.
Garnet
While garnet is often viewed as a ruby substitute, it has its own unique
qualities that can be appreciated on their own. It comes in a variety
of colors, including many shades of red, from very pale to brick to
a red-black. It comes in larger sizes, usually has good clarity and
has a respectable hardness that allows it to wear well.
Like many red stones, garnet was once believed to stop bleeding. It
was a symbol of loyalty and energy, promoted sincerity, and was said
to have illuminative powers, both physically and spiritually. Garnet
was also said to alleviate anger, promote tranquility and offer protection
in health and travel.
Garnet is the birthstone of January.
Opal
Opal
is made of the same ingredients as quartz, except it contains a little
water and has not been compressed into crystals. As a result, it is
softer than quartz and has to be treated a little more carefully to
avoid damage. The shifting colors seen in opal, called "fire,"
are the result of microscopic spherical structures within the stone
which reflect different wavelengths of light depending on their spacing,
creating the colorful shimmering effect. There is no other gemstone
that looks remotely like it. It comes in both black and white varieties,
with black being the most rare. Australia is the principal source of
opal today. Like other non-transparent stones, it is usually cut into
a smooth, rounded, polished dome called a cabochon.
Some legends say that opal is good for the eyes, both improving vision
and warding off eye troubles. It also has a reputation for sharpening
the mind and the emotions. Opal is a symbol of fidelity, but it came
with a price, since it would bring trouble to someone who was unfaithful.
Opal is October's birthstone.
Peridot
Peridot
is an ancient stone, mined at least as long ago as the ancient Greeks.
Peridot is also often called chrysolite or olivine, which is the proper
name for the mineral. Its color is its most important quality, and can
range from yellow green to a striking chartreuse. (The chrysolite name,
in fact, often refers to peridot that is more yellow than green.) The
stones have good clarity and are appropriate for faceted cuts since
light sparkles through them. They are relatively soft and should be
protected from abuse.
Peridot offered protection from depression and deception in Roman times,
was used for inspiration and eloquence in the Middle Ages, and was also
used to cure liver disease and promote friendship. In general, it was
believed to ensure good thoughts in the mind of the wearer.
Peridot is the birthstone of August.
Ruby
Along
with the emerald and sapphire, ruby is one of the most prized colored
gem available. The main quality of the ruby is its bright red color.
The best color usually comes from Burma and is very costly; stones from
Thailand are darker but clearer and much more common. Only red stones
are called rubies. If the color is too light to be called red, it is
a pink sapphire.
Corundum, the main material of ruby, is the second-hardest material
known after diamond. Inclusions and flaws are fairly common, and many
rubies are treated to enhance their color. In general, one should look
for a bright red stone with as few inclusions as possible. Synthetic
rubies offer good color, clarity and size, and are more affordable.
Rubies were the most valuable gems in ancient Southeast Asia, where
they are found. A fine ruby had all sorts of magical powers. Its color
was thought to come from an undying flame inside the stone - or, in
some legends, a piece of the planet Mars - and it allowed its owner
to live in safety, even in the midst of enemies. It was believed to
bring its owner all kinds of protection and to stop bleeding. In Burma,
it could make one invincible - as long as it was embedded in the skin.
In more modern times, rubies became the symbol of love and passion.
Ruby is July's birthstone.
Tanzanite
While
zoisite has been known for some time, gem-quality zoisite wasn't found
until 1967, when a deposit was uncovered in Tanzania. This is still
the only source for tanzanite, one of the most recent additions to the
gem world. It gained almost immediate popularity both for its scarcity
and its rich, blue-violet color. It is often heat-treated to bring out
a uniform color. While a prized stone, caution should be used when it
is worn in rings, since it is fairly soft and can be scratched or chipped.
Although it usually has good clarity, tanzanite can be damaged by ultrasonic
cleaners, so other cleaning methods are recommended.
Needless to say, as a recently discovered stone, tanzanite has no ancient
legends associated with it.