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It is a known and unknown stone. It is used for a very long time in jewelry, but it was confused always for the ruby.
At present Spinelle became a choice informed about " stone of investment ".
The main quality of Spinelle is its color. Colors the most wished on the market are the lively red, the pink, the orange and the blue says "cobalt blue", which is rarer. The more pale colors do not miss charm but are more affordable.
It is necessary to look for a very well cut stone. Whether it is on the markets of Sri Lanka, in Vietnam and especially in Myanmar, the size is optimized to gain weight, to the detriment of the brightness of the stone. We thus make re-cut all the spinelles which we select from these countries.
The spinelle possesses a good hardness what allows to use it in jewelry(jeweler's store) calmly.
As for quite different stone gemstone, the brightness will be favored by a big purity. But many enthusiasts like certain inclusions which give certain charm to gemstones!
The spinelle has the clear advantage to be a stone little handled gemstone. Only some spinelles can be treated. In particular, some spinelles red can be warmed to decrease a slightly too brown tint.
Its close chemical composition with the family of corundum (Sapphires and Ruby) allowed certain Mr Verneuil, to finalize a technique of synthesis of spinelles. The spinelles of synthesis Verneuil is created in Laboratory since 1920. They do not have complétement the same chemical composition as the natures. A gemmologist will make the difference.
This synthetic spinelles floods the market of stones gemstones and must be indicated as such.
Spinelle was used for many fineries, by thinking of using of the Ruby. The most famous confusion is the one of the Ruby of Prince Noir, on the British Imperial Crown. This 170 carat "Ruby" was considered for a long time as the biggest Ruby in the World, until it is identified as a spinelle.
To know more about the mineralogy of the spinelle, see Mindat.org->
Topazes, as quartz, can contain inclusions of the other minerals such as golden rutile.
During the crystallization, rutile was already formed it in this place and finds itself prisoner in the topaz.
To know more about the mineralogy of the Topaz in shine, see mindat.org ->
The turquoise has a typical blue color which gave its name to the "turquoise blue" color.
She can also have green tints, and be included by black veins. But the quality most estimate is a uniform blue color, without inclusion
The Turquoise can see its green color deteriorating in blue under the influence of outer agents such as certain flavors.
Unfortunately, the Turquoise is a very often handled stone.
Among several processings, the most common is the impregnation: we dip the stone which is porous in an artificial resin (often colored) to make it glossier harder and more colored. Certain "stones" are going to be some powder which is going to be compacted to look like the Turquoise. Very well-made synthetic materials are very often met on the market. It is very hard today to find of the good quality natural Turquoise, and difficult to differentiate well the " forgery of the truth ".
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Legends
Because of his journey through the time, many legends were born to explain the mysteries of the Turquoise. This stone was very important for many peoples as Egyptians, Iranians, Tibetans, the Incas, Aztecs, and the Amerindians. It is of the latter that reached us most legends.
In the Apache tribe, it was thought that if we dug at the foot of a rainbow, we could find of the Turquoise and what if we carried it in the bow it made invincible and helped to aim well.
Another legend tells that one day a leader in the blue skin avoided his enemies through the desert. Every time he stopped, beads of sweat fell on the ground and by mixing in the earth became of the Turquoise.
One of these most beautiful legends tells that the Native Americans danced and were delighted because the rain arrived finally. Their tears of joy, mixed in the rain infiltrated into the Earth-mother to become of the Turquoise.
To know more about the mineralogy of the Turquoise, seemindat.org->
Natural blue topazes are rare.
Processing of a blue topaz: almost whole lot of blue topazes in the trade obtain their color after a processing by irradiation (gamma rays), from a natural white topaz.
The legislation is strict, and these topazes, once treated, must be stored before being put into service by laboratories, until there is not rémanente irradiation anymore. There is thus absolutely no risk for the health
There are various handled blue topazes. The clearest are said " topaz sky blue ". They have the color of Aquamarine. Then come topazes with a more intense royal blue color, more "neon"; they are said topazes " Swiss blue ".
Topaz " London blue " has the most intense tint of blue: a blue deep ultramarine with a point of green
Selon le Magazine Colored Stone, la Topaze est la deuxième pierre la plus populaire après le Saphir bleu.
Pour en savoir plus sur la minéralogie de la Topaze bleue, voir mindat.org ->
His color is of yellow - orange (honey) with brown-orange and brown-pink. By heating, the pink color is stressed.
It is the variety of the rarest topaz
.
Pour en savoir plus sur la minéralogie du spinelle, voir mindat.org ->
It is a stone in the multiple colors. She is found, most of the time (colorless) white, it is then used to imitate the diamond in the similar properties (hardness of 8), powder for the polishing, or still in optics for lenses. Light blue "Sky blue", more saturated "Swiss blue" and dark blue "London blue", are handled blue Topazes, found most on the market. Natural blue Topazes are very rare. The varieties of the most sought colors are the ones "Imperial" said Topazes. Of yellow in orange-rosé, they are extremely rare and of a great beauty.
The Mystic Topaz which shows an effect of splendid rainbow, is in fact a colorless Topaz covered with a cover which gives this effect. Scratch a little the breech of your stone and you will be surprised well …
The most known for some Topazes is set in the Portuguese crown: Braganza. For a long time taken for a diamond, she weighs 1680ct. The "Name Imperial Topaz" of 97.45ct is an admirable imperial Topaz in Field Museum of National History, in the United States.
The topaz is the birthstone of November.
The topaz is the stone of the anniversary of 44 years of marriage: " wedding of Topaz ".
Pour en savoir plus sur la minéralogie de la Topaze, voir mindat.org->
Its blue color ultramarine is obtained by irradiation.
The blue(bruise) London Blue is generally obtained by bombardment of electrons, followed by heating to stabilize the color
.
In answer to the expressed fears, there is a very strict legislation which was organized by the laboratories which handle Topazes. These are stored before being put into service. Stones on sale do not have persistent irradiations anymore. Think of the jewelers or the lapidaries who spend their time with these stones in hands and who are not irradiated for all that!
Le bleu London Blue est généralement obtenu par bombardement d'électrons, suivi de chauffage pour stabiliser la couleur.
Pour en savoir plus sur la minéralogie de la Topaze London blue, voir mindat.org ->
Its blue color "neon" is obtained by irradiation.
The blue Swiss Blue is generally obtained by bombardment of electrons, followed by heating to stabilize the color
In answer to the expressed fears, there is a very strict legislation which was organized by the laboratories which handle Topazes. These are stored before being put into service. Stones on sale do not have persistent irradiations anymore. Think of the jewelers or the lapidaries who spend their time with these stones in hands and who are not irradiated for all that!
The blue London Blue is generally obtained by bombardment of electrons, followed by heating to stabilize the color.
To know more about the mineralogy of the Topaz London blue, see
En réponse aux craintes exprimées, il existe une législation très stricte qui a été mise en place par les laboratoires qui traitent les Topazes. Celles-ci sont stockées avant d’être mises en circulation. Les pierres en vente n’ont plus d’irradiations rémanentes. Pensez aux joailliers ou aux lapidaires qui passent leur temps avec ces pierres dans les mains et qui ne sont pas pour autant irradiés.
Pour en savoir plus sur la minéralogie de la Topaze Swiss blue, voir mindat.org ->
HIts blue color, close to that of the aquamarines, is obtained by irradiation.
Handled blue topazes which we market rémanentes irradiation and are in accordance with the requirements of the legislation. They are without any risk for the health.
To know more about the mineralogy of the Topaz Sky blue, seemindat.org ->
