FEBRUARY BIRTHSTONE - AMETHYST


The gemstone Amethyst is the Birthstone for February. It is also the Zodiac stone for the constellation of Pisces. Amethyst is associated with spirituality, wisdom, sobriety, and security.

Amethyst is the purple variety of the mineral quartz and is a popular gemstone. Although it must always be purple to be amethyst, it can and does have a wide range of purple shades. Its color is unparalleled, and even other, more expensive purple gemstones are often compared to its color and beauty. If it were not for its widespread availability, amethyst would be very expensive.

The name "amethyst" comes from the Greek and means "not drunken." This was perhaps due to a belief that amethyst would ward off the effects of alcohol, but most likely the Greeks were referring to the almost wine-like color of some stones that they may have encountered.

Amethyst can occur as long prismatic crystals that have a six sided pyramid at either end or can form as druzes that are crystalline crusts that only show the pointed terminations. As a mineral specimen, amethyst is popular for its color and nice crystal shapes that produce a handsome, purple, sparkling cluster.

However, amethyst is not the same everywhere. Different localities can produce a unique amethyst to that particular region or even to that particular mine. Experts can often identify the source mine that a particular amethyst came from. The key to this is the specimen's color, shape of crystal, inclusions, associations and character of formation.

The following is a list of many of the more noteworthy localities and some of the attributes that characterize the amethyst found there.

  • Vera Cruz, Mexico -- very pale, clear, prismatic crystals that are sometimes double terminated and have grown on a light colored host rock. Crystals are typically phantomed, having a clear quartz interior and an amethyst exterior. Some are sceptered and phantomed.
  • Guerrero, Mexico -- dark, deep purple, prismatic crystals that radiate outward from a common attachment point. Often the crystals are phantomed opposite of Vera Cruz amethyst having a purple interior with a clear or white quartz exterior. These are some of the most valuable amethysts in the world.
  • Minas Gerais and Rio Grande do Sul, Bahaia, Brazil -- crystals form in druzy crusts that line the inside of sometimes large volcanic rock pockets or "vugs". Some of the vugs may have formed from trees that were engulfed in a lava (or ash) flow millions of years ago and have since withered away. Other vugs are just gas bubbles in the lava. Some vugs can be quite large. The crystals that form are usually light to medium in color and only colored at the tops of the crystals. Most clusters form with gray, white and blue agate and have a green exterior on the vugs. Calcite sometimes is associated and inclusions of cacoxenite are common. On occasion, even excellent crystals of gypsum have been found nestled inside these amethyst lined vugs.
  • Maraba, Brazil -- large crystals with unattractive surfaces that are of a pale to medium color and often carved or cut into slices. The large "Maraba points" are nearly always polished to remove the rough and milky surface, revealing the beautiful purple amethyst inside.
  • Thunder Bay, Canada -- a distinct red hematite inclusion just below the surface of the crystals is unique to this locality. Clusters are druzy crusts that line the fissures formed in ancient metamorphic rocks.
  • Uruguay -- crystals are dark to medium and form in druzy crusts of small crystals that line the inside of volcanic vugs that have a gray or brown exterior. The crystals are usually colored throughout, unlike the Brazilian crystals, and form with a multicolored agate that often contains reds, yellows and oranges. Often amethyst- coated stalactites and other unusual formations occur inside these vugs. The intense color of these druzy crusts is exceptional.
  • Africa -- crystals are usually large but not attractive. However, the interior color and clarity are excellent and polished slices and carvings as well as many gemstones are prized and admired.
  • Maine, USA -- Dark druzy clusters that are not widely distributed today.
  • North Carolina, USA -- Druzy clusters that have a bluish-violet tint.
  • Pennsylvania, USA -- druzy clusters that filled fractures in metamorphic rocks. They are generally a brownish purple and patchy in color.
  • Colorado, USA -- druzy clusters form crusts inside of fissures in sandstone, often on top of a crust of green fluorite. Crystals are dark but rather small.
  • Italy -- both Vera Cruz like crystals, although not as well defined, and large parallel growth clusters with good evenly distributed color.
  • Germany -- associated with colorful agates that form a druzy light-colored crust.
  • Ural Mountains, Russia -- a very clear and dark variety that is cut for fine expensive gemstones, natural uncut clusters are rarely on the market.

Often, cut gems of amethyst are graded using the terms: Siberian, Uruguayan or Bahain to represent high medium and low grade respectively, regardless of the actual source. Because of the patchiness of the color distribution in the crystals, Amethyst is often cut as brilliant round cuts to maximize the color. Other cuts can be used when the color is better distributed.

The color purple is traditionally the color of royalty and amethyst has been used since the dawn of history to adorn the rich and powerful monarchs and rulers. Today, amethyst is a lovely and affordable gemstone that is fortunately available in a wide variety of cut and uncut stones that we can all possess and admire.

Prasiolite is the leek-green variety of quartz, rare in nature but used as a gemstone, sometimes (wrongly) called Green Amethyst.

For natural amethyst specimens, including crystals and large geodes, see our Amethyst specimens pages.

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This Site Awarded
Available AMETHYST specimens:
AMETHYST specimen AME-214
$ 40.00 -20% = $ 32.00
Dims: 5.27x2.39x2.08in (13.39x6.06x5.29cm) .... Wt: 11.9oz (338g) .... Loc: Tamil Nadu, India
While this specimen does display a rather classic etched elestial amethyst crystal, what I really like is the cluster of amethyst crystals at the other end. They display a significant variation in color, plus they appear to have grown as a series of stacked crystals, forcing them to take a flatter form than normal.
no photo
AME-214
$ 32.00
no photo
AMETHYST specimen AME-227
$ 595.00 -20% = $ 476.00
This 79 pound geode has very good color and an interesting shape. Instead of a simple, uniform, crystal-lined hollow, the top third has a significant narrowing, and the bottom half of the cavity has a large cylindrical cluster of crystals. Several of the crystals in the bottom (visible in the close-up image) have unusual round inclusions, mostly white but with a dark center, and whose external shape is the same as the amethyst crystal they are a part of. One of these inclusions is exposed at the bottom of the geode, and appears fibrous under a loupe, but I'm uncertain as to its identity.
no photo
AME-227
$ 476.00
no photo
AMETHYST specimen AME-241
$ 225.00 -60% = $ 90.00
Dims: 6.03x3.59x4.08in (15.32x9.12x10.36cm) .... Wt: 54oz (1537g) .... Loc: Magaliesberg Mountains, Kwa Ndebele, South Africa
This is an impressive "Cactus Amethyst" cluster, showing a half-dozen well-formed prismatic crystals covered with a druze of pale amethyst crystals and some areas that look like citrine.
no photo
AME-241
$ 90.00
no photo
AMETHYST specimen AME-244
$ 30.00 -20% = $ 24.00
Dims: 4.4x2.6x0.7in (11.1x6.7x1.8cm) .... Wt: 5.9oz (168g) .... Loc: Irai, Rio Grande do Sul, Brazil
This type of quartz is called "Rose Amethyst" largely because many of the formations resemble a rose petal. This specimen is pale, with some areas nearly colorless and others having a pale amethyst color. The individual crystals are long and lay against the original host rock which has been removed. It is quite appealing for such a pale piece.
no photo
AME-244
$ 24.00
no photo
see this List of ALL specimens including SOLD ones
 

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