Fluorite or Fluorspar Gemstone

Particular PropertiesConsistenceColorUse in Jewelry | Mining

Fluorite is a soft gemstone found in various locations in the United States and Europe, also called “false Ruby,” however, it imitates many of precious stone in its color, when cut. Fluorite possesses such transparency and luster, that many of semi-precious and precious stones could even envy. Nonetheless, it can be easily distinguished from genuine stones, thanks to its hardness equal to 4/10, according to the Mohs scale of hardness.

Particular Properties of Fluorite

Fluorite Gemstone Crystal

As mentioned above, Fluorite is a very soft stone and could be scratched even by a piece of glass or any knife. Fluorite, furthermore, is brittle; its crystals are cleavage parallel, therefore, they could be easily damaged during cutting.

However, the Fluorite possesses a unique property called “fluorescence.” The crystals of Fluorite, when heated, have always exhibited a fluorescence, thus, a blue crystal, for example, emits a green glow, when a green crystal could emit a purple glow.


Chemically, Fluorite is nothing but fluorine of calcium. Fluorite contains such subject as fluorine inside it in a large quantity, approximate 49 percent of its structure.

By the way, such subject as a fluorine occurs in the human body in minute quantities. For example, it is an element of human teeth. This subject has been determined in the bones of fossil animals, as well.

Moreover, according to the studies, made in XIX century, the scientists concluded, that the human bones, found in Pompeii contained more of the fluoride substance, than we can observe in the recent human bones. [The Homeopathic World, Vol. VIII, London, 1873.]


Fluorite crystals represent a wide spectrum of colors. Usually, Fluorite is colorless and transparent, however the specimens of red, green, blue, yellow and violet colors occur in abundance. The crystals of Fluorite could become phosphorescent under the influence of heat or light.

Use in Jewelry

As we know already, the Fluorite is a very soft gemstone, however, it possesses all necessary qualities to be used in modern jewelry. Due to its softness, any wearer has to be pretty careful, because it’s too easy to damage this splendid semi-precious stone. Nevertheless, as we mentioned above Fluorite was used to imitate genuine gems, therefore it was called as false Ruby, false Emerald, false Topaz, false Amethyst, etc., at different times.

However, earlier, Fluorite has been used as an ornamental or decorative stone. The collections of the museums contain numerous of cups, vases and other articles made of Fluorite, made by our ancestors.


Fluorite is a widespread gemstone, that mined all over the world. The most known mines are located in the United Kingdom and the United States. The principal locations is the US are Elizabethtown, Shawneetown, Hardin County. Some distinguished specimens of Fluorite, chiefly of green color, were discovered at Muscalonge Lake, St.Lawrence County, New York. Also, the immense mines of green Fluorite were found at Macomb in 1888.

In the United Kingdom, there are also several locations, where the Fluorite crystals were found, such as Cumberland and Derbyshire, however, in these locations, this mineral is known under the names Derbyshire spar and Blue John.

There are also known locations in Germany and Switzerland, where are mined the crystals of red Fluorite, and also in China, Mexico, Russia and South Africa.

June 23, 2018

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