Title: Purchase Gemstone Jewelry From Chordia Jewels
1Amethyst
2Amethyst Story
- Amethyst is a violet variety of quartz. The name
comes from the Koine Greek aµ???st?? amethystos
from a- a-, "not" and µe??s?? (Ancient Greek)
methysko / µe?? metho (Modern Greek),
"intoxicate", a reference to the belief that the
stone protected its owner from drunkenness. The
ancient Greeks wore amethyst and carved drinking
vessels from it in the belief that it would
prevent intoxication
3Structure
- Amethyst is a purple variety of quartz (SiO2) and
owes its violet color to irradiation, impurities
of iron and in some cases other transition
metals, and the presence of other trace elements,
which result in complex crystal lattice
substitutions. The hardness of the mineral is the
same as quartz, thus making it suitable for use
in jewelry.
4Hue and Tone
- Amethyst occurs in primary hues from a light
lavender or pale violet, to a deep purple.
Amethyst may exhibit one or both secondary hues,
red and blue. High quality amethyst can be found
in Siberia, Sri Lanka, Brazil, Uruguay, and the
Far East. The ideal grade is called "Deep
Siberian" and has a primary purple hue of around
7580, with 1520 blue and (depending on the
light source) red secondary hues. Rose de France
is defined by its markedly light shade of the
purple, reminiscent of a lavender/lilac shade.
These pale colors were once considered
undesirable but have recently become popular due
to intensive marketing. - Green quartz is sometimes incorrectly called
green amethyst, which is a misnomer and not an
appropriate name for the material, the proper
terminology being prasiolite. Other names for
green quartz are vermarine or lime citrine.
5 Amethyst frequently shows color zoning, with the
most intense color typically found at the crystal
terminations. One aspect in the art of lapidary
involves correctly cutting the stone to place the
color in a way that makes the tone of the
finished gem homogeneous. Often, the fact that
sometimes only a thin surface layer of violet
color is present in the stone or that the color
is not homogeneous means that only a small
portion of the material is suitable for faceting.
The color of amethyst has been demonstrated to
result from substitution by irradiation of
trivalent iron (Fe3) for silicon in the
structure, in the presence of trace elements of
large ionic radius, and, to a certain extent, the
amethyst color can naturally result from
displacement of transition elements even if the
iron concentration is low. Natural amethyst is
dichroic in reddish violet and bluish violet, but
when heated, turns yellow-orange, yellow-brown,
or dark brownish and may resemble citrine, but
loses its dichroism, unlike genuine citrine. When
partially heated, amethyst can result in
ametrine.
6History
- Amethyst was used as a gemstone by the ancient
Egyptians and was largely employed in antiquity
for intaglio engraved gems. - The Greeks believed amethyst gems could prevent
intoxication, while medieval European soldiers
wore amethyst amulets as protection in battle in
the belief that amethysts heal people and keep
them cool-headed. Beads of amethyst were found in
Anglo-Saxon graves in England. Anglican bishops
wear an episcopal ring often set with an
amethyst, an allusion to the description of the
Apostles as "not drunk" at Pentecost in Acts
215. - A large geode, or "amethyst-grotto", from near
Santa Cruz in southern Brazil was presented at a
1902 exhibition in Düsseldorf, Germany.
7Geographic Distribution
- Amethyst is found in many locations around the
world. Between 2000 and 2010, the greatest
production was from Marabá and Pau d'Arco, Pará,
and the Paraná Basin, Rio Grande do Sul, Brazil
Sandoval, Santa Cruz, Bolivia Artigas, Uruguay
Kalomo, Zambia and Thunder Bay, Ontario. Lesser
amounts are found in many other locations in
Africa, Brazil, Spain, Argentina, Russia,
Afghanistan, South Korea, Mexico, and the United
States. - Amethyst is produced in abundance from the state
of Rio Grande do Sul in Brazil where it occurs in
large geodes within volcanic rocks. Many of the
hollow agates of southwestern Brazil and Uruguay
contain a crop of amethyst crystals in the
interior. Artigas, Uruguay and neighboring
Brazilian state Rio Grande do Sul are large world
producers, with lesser quantities mined in Minas
Gerais and Bahia states.
8Amethyst is also found and mined in South Korea.
The large opencast amethyst vein at Maissau,
Lower Austria, was historically important, but is
no longer included among significant producers.
Much fine amethyst comes from Russia, especially
from near Mursinka in the Ekaterinburg district,
where it occurs in drusy cavities in granitic
rocks. Amethyst was historically mined in many
localities in south India, though these are no
longer significant producers. One of the largest
global amethyst producers is Zambia in southern
Africa with an annual production of about 1000
tons.
Amethyst occurs at many localities in the United
States. The most important production is at Four
Peaks, Gila and Maricopa Counties, Arizona, and
Jackson's Crossroads, Wilkes County, Georgia.
Smaller occurrences have been reported in the Red
Feather Lakes, near Fort Collins, Colorado
Amethyst Mountain, Texas Yellowstone National
Park Delaware County, Pennsylvania Haywood
County, North Carolina Deer Hill and Stow, Maine
and in the Lake Superior region of Minnesota,
Wisconsin and Michigan. Amethyst is relatively
common in the Canadian provinces of Ontario and
Nova Scotia. The largest amethyst mine in North
America is located in Thunder Bay, Ontario
9Faceted amethyst
Emerald cut amethyst
Amethyst crystals from Mexico
10 Cultural History
11Ancient Greece
- The Greek word "amethystos" may be translated as
"not drunken", from Greek a-, "not" methustos,
"intoxicated". Amethyst was considered to be a
strong antidote against drunkenness, which is why
wine goblets were often carved from it. In his
poem "L'Amethyste, ou les Amours de Bacchus et
d'Amethyste" (Amethyst or the loves of Bacchus
and Amethyste), the French poet Remy Belleau
(15281577) invented a myth in which Bacchus, the
god of intoxication, of wine, and grapes was
pursuing a maiden named Amethyste, who refused
his affections. Amethyste prayed to the gods to
remain chaste, a prayer which the chaste goddess
Diana answered, transforming her into a white
stone. Humbled by Amethyste's desire to remain
chaste, Bacchus poured wine over the stone as an
offering, dyeing the crystals purple. - Variations of the story include that Dionysus had
been insulted by a mortal and swore to slay the
next mortal who crossed his path, creating fierce
tigers to carry out his wrath. The mortal turned
out to be a beautiful young woman, Amethystos,
who was on her way to pay tribute to Artemis. Her
life was spared by Artemis, who transformed the
maiden into a statue of pure crystalline quartz
to protect her from the brutal claws. Dionysus
wept tears of wine in remorse for his action at
the sight of the beautiful statue. The god's
tears then stained the quartz purple.
12Other Cultural Associations
- Tibetans consider amethyst sacred to the Buddha
and make prayer beads from it. Amethyst is
considered the birthstone of February. In the
Middle Ages, it was considered a symbol of
royalty and used to decorate English regalia. In
the Old World, amethyst was considered one of the
Cardinal gems, in that it was one of the five
gemstones considered precious above all others,
until large deposits were found in Brazil.
13Value
- Up until the 18th century, amethyst was included
in the cardinal, or most valuable, gemstones
(along with diamond, sapphire, ruby, and
emerald). However, since the discovery of
extensive deposits in locations such as Brazil,
it has lost most of its value. - Collectors look for depth of color, possibly with
red flashes if cut conventionally. As amethyst is
readily available in large structures the value
of the gem is not primarily defined by carat
weight this is different from most gemstones
where the carat weight exponentially increases
the value of the stone. The biggest factor in the
value of amethyst is the color displayed. - The highest-grade amethyst (called "Deep
Russian") is exceptionally rare and therefore,
when one is found, its value is dependent on the
demand of collectors. It is, however, still
orders of magnitude cheaper than the
highest-grade sapphires or rubies.
14Color Of Amethyst Gemstone
- 1. Amethyst Gemstone is very attractive gemstone
because of purple color. Amethyst is the name of
the color as like word Turquoise. - 2. Variety of shades of Amethyst Orchid and
Lavender for light color, Reddish Purple or
Violet Ish color.
15Amethyst Crystal
- Amethyst receiving at purple color during crystal
growth when trace amount of iron are in corporate
into a growing quartz crystal. - The intensity of purple color vary from crystal
to crystal. - After the crystallization, gamma rays emitted by
the radioactive material, and use iron to purple
color.
16Amethyst Crystal
17Properties Of Amethyst Gemstone
- 1. Amethyst is a powerful and protective
gemstone. - 2. Amethyst boosts hormone production, tune the
endocrine system and metabolism. - 3. Amethyst protects the wearer from all types of
harm psychic attack and other health problem.
18Care Of Amethyst Gem and Jewelry
- Avoid prolonged to bright light.
- Always cleaned amethyst jewelry with warm and
sudsy water or use soft cloth.
19Amethyst Treatment to Citrine and Prasiolite
- . The color of Amethyst can be modified by
heating. - . Yellow or Golden Quartz sold as Citrine.
- . Natural heating can also change the color of
Amethyst to pale green the name of the treatment
is called Prasiolite.
20CUT
- Amethyst can be cut into a wide variety of
shapes. As this is the case, you will be almost
guaranteed to find a stone to fit your personal
style. You will find these gemstones cut into
standard shapes like rounds, pears, ovals, and
cushions. - You will also find purple quartz cut into faceted
patterns referred to as brilliant cuts. And, if
you are exceptionally adventurous, it is possible
to find this special stone cut into one-of-a-kind
shapes.
21CARAT
- Carat weight is always of importance in the
discussion of gemstones. This stunning gemstone
is often chosen as a center stone in jewelry as
the cost of an amethyst does not increase in cost
as dramatically with size as many other
gemstones. Like other semi-precious gemstones, a
large amethyst will be noticeably more
cost-effective than precious stones like
diamonds, rubies, sapphires, and emeralds.
22CLARITY
- Although clarity can have an impact on the value
of your amethyst, so long as inclusions are
indistinguishable to the naked eye, they will not
greatly reduce the value of your stone. Indeed,
color is more important in determining the value
of this particular gem than minor flaws. Even
with minor undistinguishable flaws, an amethyst
with good color will retain most of its value.
23How is Amethyst Graded?
- Whether you are born in the month of February or
are just a fan of this engaging purple gemstone,
you will want to understand how amethysts are
graded for quality. - Amethysts gemstones typically fall under a AAAA
to B grading system.
24 AAAA GRADING
- It is extremely rare to find an amethyst with
this rating. Only 1 of all amethysts can be
expected to fall under this category. These
stones will have no inclusions visible to the
naked eye. Considered heirloom quality, these
much sought after gemstones will have a
distinctly dark purple hue.
25AAA GRADING
- You can expect to find only 10 of amethyst to
fall into this category. These exceptional
gemstones will have no visible flaws and a medium
to dark purple color.
26AA GRADING
- Approximately 33 of amethyst on the market will
fall into this category. You can expect to find
slight inclusions in these medium purple
gemstones.
27A GRADING
- Still considered good, these light purple
amethysts can be expected to have slight to
moderate inclusions.
28B GRADING
- There are also amethysts with a B grading, but we
do not recommend B grade amethysts to be set in
jewelry. They have obvious inclusions, and its
color would have hues of grey and/or brown. B
grade amethysts are usually chosen to be cut into
cabochons, or beads. However, there are
circumstances where it can be treated to have a
richer purple color.
29Color Chart Of all Grades
30Get In Touch
- Head Office
- 404, Siddha Jewels,
- Nathmalji Ka Katla,
- Agra Road Jaipur 302003, Rajasthan, India
- Contact No 91-141-4062734
31Thank You