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Amethyst earrings at JewelryWeb


Amethyst

SiO2 with minor Fe4+ impurities for color. Quartz


Amethyst rings at JewelryWeb.com

Amethyst Appearance

Amethyst Gem Amethyst is the purple variety of quartz, and is closely related to other varieties of quartz such as citrine, smoky quartz, rose quartz, and even aventurine, agate, carnelian and opal. The purple color of amethyst is due to iron impurities at specific sites in the crystalline structure. If the iron impurities within the crystal are highly oxidized, the gem takes on the deep purple of an amethyst. If the mineral is heated, the oxygen is removed from the iron and the gem fades and will turn brown then yellow, green or colorless depending on the location of the iron within the crystal. If it turns yellow, it is then Amethyst faceting roughknown as a citrine. The purple color can be restored through irradiation, which re-oxidizes the iron. The process can be natural, or produced in a laboratory, and can be repeated several times unless the distribution of the iron impurities is changed, usually through excessive heating. It is not possible to determine if the gem started life as an amethyst or citrine, or if it was naturally or synthetically changed.

Composition  :   Si02 Class  :   Tectosilicate Specific Gravity  :   2.65
Refractive Index  :   1.54 to 1.55 BiRefringence  :   weak (.009) Pleochroism  :   Weak
Cleavage  :   None Luster  :   Vitreous Fracture  :   Conchoidal
Transparency  :   Transparent to Translucent Streak  :   White Fluorescence  :   Weak Blueish
Crystal System  :   Hexagonal Twinning  :   Dauphine and Brazil twinning Hardness  :   7
Dispersion  :   .013 Color  :   Purple Crystal Habit  :   Elongated hexagonal prisms with pyramids

Amethyst Occurrence

Most amethyst stones used in jewelry come from either Africa or South America. Uruguay produces some of the finest amethyst specimens, but high quality stones are also found in Brazil, Bolivia, Argentina and Mexico. Zambia, Namibia and other African countries are also major producers of amethyst. Canada, Russia, Germany, Austrilia Italy and the United States all produce small quantities of amethyst.
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Amethyst fanAmethyst crystals form in macroscopic, horizontally striated hexagonal prisms terminated by a combination of positive and negative rhombohedrons forming six sided pyramids. It often occurs as drusy masses showing only the rhobohedral terminations but can also be massive

Formation of Amethyst


Amethyst GeodeAmethyst is formed in igneous, metamorphic and sedimentary rocks asAmethyst point well as hydrothermal veins, metasomatic and hot spring deposits. Although it may be found in limited quantities as individual stones or crystals, it is mainly found as crystals lining druses in various igneous rocks such as granites and gneiss. The crystals form from silicon rich fluids associated with the magma.

Amethyst - mine to pendent



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Follow an amethyst from the mine to the finished pendent
 

Amethyst History

Amethyst Trillion The name "Amethyst" comes from the Greek "Amethustos", which means "not drunken". It was so named because of its color and the belief that a person drinking wine from a cup carved from amethyst could not become intoxicated. It may be that those who did not get drunk were actually drinking water, but because of the color of the cup, no one could tell.
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Amethyst pendants from Angara

Amethyst Lore


 The legend of the origin of amethyst comes from Greek myths. Dionysius, the god of drunkenness, was Amethyst Fanangered one day by an insult from a mortal and swore revenge on the next mortal being that crossed his path. He created fierce tigers to carry out his wish. Along came unsuspecting Amethyst, a beautiful maiden on her way to pay tribute to the goddess Diana. To protect her from the wrath of Dionysius, Diana turned Amethyst into a stature of pure crystalline quartz to protect her from the brutal claws of the tigers. At the sight of the beautiful statue, Dionysius wept tears of wine in remorse for his evil deed. The god's tears stained the quartz purple, creating the gem we know today as amethyst.

Amethyst was said to bring serenity and peace, to increase ones ability to grasp new ideas, make one shrewd in business dealings, and sharpen the wit.. It could protect against poison and from enemies in battle. It could treat arthritis, deafness, heart disease, and skin rashes as well as relieve pain.


Amethyst Gemstone

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