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Amethyst Cluster

$13.00

Amethyst is a variety of quartz known for its brilliant purple crystals.

The purple color is produced by trace iron inclusions in the crystal structure which have lost an electron due to gamma irradiation. This tiny change results in hues that can range from pale lilac to deep reddish purple.

Amethyst typically forms in volcanic, igneous, and certain metamorphic rocks, as those contain enough radioactive trace elements for sufficient irradiation to produce the required change in iron atoms. Quartz containing nonirradiated iron is called eisenkiesel.

Heating amethyst will change the color from purple to clear and then to yellowish. Heat treated amethyst are often misidentified as citrine.

Amethyst can fade if overexposed to light and can be artificially darkened with adequate irradiation.

Polished amethysts are widely sold as gemstones for jewelry and have been used in a variety of decorative ways for thousands of years.

 

Size: 2"-4" clusters

The pictures are representative of the specimen you will receive.

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Amethyst Cluster

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Amethyst is a violet variety of quartz . The name comes from the Koine Greek αμέθυστος amethystos from α- a- , "not" and μεθύσκω (ancient greek) methysko / μεθώ metho (modern greek), "intoxicate", a reference to the belief that the stone protected its owner from drunkenness . 

Amethyst is a purple variety of quartz (SiO 2 ) 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.

Amethyst occurs in primary hues from a light pinkish violet color to a deep purple color. 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 75–80%, with 15–20% 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.

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C.G. (Colorado, United States)
Best birthday present

Bought this for my nephew who Is a beginning rock collector and he absolutely loved it.

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Amethyst Cluster

Amethyst Cluster

$13.00