CARE OF YOUR TOURMALINE GEM STONE

Due to the pryo and piezo electrical nature of Tourmaline, it needs to be cleaned more often than other gemstones as it attracts dust. When cleaning, the best method is with a toothbrush and warm soapy water. Do not have your Tourmaline cleaned in an ultrasonic cleaner or a steam cleaner. Tourmaline is quite vulnerable to heat and strong heat and sudden temperature changes can alter color.

MORE GEMOLOGICAL PROPERTIES OF TOURMALINE GEM STONES

GEM SPECIES : TOURMALINE

REFRACTIVE INDEX : 1.624 1.644

HARDNESS (MOHS SCALE) : 7.5

TOUGHNESS : FAIR

CAUSE OF COLOR : GREEN IRON,CHROMIUM, VANADIUM, RED,PINK MANGANESE, TITANIUM, BLUE - IRON

STABILITY TO LIGHT : STABLE

BIRTHSTONE : OCTOBER


A Superb Spectrum of Colors

Tourmalines are mixed crystals of aluminium boron silicate with a complex and changing composition. The mineral group is a fairly complex one. Even slight changes in the composition cause completely different colors. Crystals of only a single color are fairly rare; indeed the same crystal will often display various colors and various nuances of those colors. And the trademark of this gemstone is not only its great wealth of color, but also its marked dichroism. Depending on the angle from which you look at it, the color may be different or more or less intense. It is always at its most intense when viewed looking toward the main axis, a fact to which the cutter must pay great attention when lining up the cut. This gemstone has excellent wearing qualities and is easy to look after, for all tourmalines have a good hardness of 7 to 7.5 on the Mohs scale. So the tourmaline is an interesting gemstone in many ways.

In the fascinating world of gemstones, the tourmaline is very special. Its high availability and its glorious, incomparable color spectrum make it one of our most popular gemstones - and apart from that, almost every tourmaline is unique.

See our Private Tourmaline Gem Stone Collection!

BUY FINE TOURMALINE GEM STONES AND BROWSE OUR PRIVATE TOURMALINE COLLECTION

INTERESTING PROPERTIES OF TOURMALINE GEM STONES

An interesting phenomenon of this gem type is its piezo and pyro electric qualities. Tourmalines can become electrically charged when they are heated and then allowed to cool. Then, they have a positive charge at one end and a negative one at the other. This is known as 'pyro-electricity', derived from the Greek word 'pyr', meaning fire. The gemstone also becomes charged under pressure, the polarity subsequently changing when the pressure is taken off. When the charge changes the tourmaline begins to oscillate, similar to a rock crystal but much more pronouncedly. The Dutch, who were the first to bring the tourmaline to Europe, were familiar with this effect a long time before it was able to be provided with a scientific explanation. They used a heated tourmaline to draw up the ash from their meerschaum pipes, and called the gemstone with the amazing powers an 'aschentrekker'.

When looking for a fine Tourmaline, the usual qualities pertain Color, clarity and cut. Look for a stone with a vivid color saturation, high clarity, good cutting which releases its inner fire.



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