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MJ

Tribal pendant. Grade A jadeite jade. All natural, guaranteed untreated. No cracks. purple jade bead.

Tribal pendant. Grade A jadeite jade. All natural, guaranteed untreated. No cracks. purple jade bead.

Regular price €469,00 EUR
Regular price Sale price €469,00 EUR
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Tribal pendant. Grade A jadeite jade.

Completely natural, guaranteed without treatment.

No cracks.

purple jade bead.

As a gemologist graduated from the National Institute of Gemmology in Paris, all our stones are appraised and certified.

Possibility of drawing up an expert report, contact us

Room dimension: 31.3mm high by 30.2mm wide by 3.2mm thick.

The colors of jade:

Primary colors, such as white, black, purple, and green, are
due to a partial substitution of aluminum ions in the structure of the
jadeite. Pure jadeite, NaAlSi2O6, is colorless or white, but if chromium
or iron replace aluminum, the color resulting from this substitution
can then be green.

This first group of colors is directly related to the structure, and therefore
is called the primary group. Secondary colors such as red and
yellow, appear when jadeite has been exposed to the earth's surface.
Oxidation and hydrolysis lead to the decomposition of the surface and the
solutions containing ferric oxide infiltrate jadeite to form

limonite and hematite in the intergranular spaces, hence the color
yellow or red.

As the color group occurs after the crystallization of jadeite, one
calls it secondary group. It is also called the "skin color" of the
raw jadeite. White jadeite: the composition of white jadeite has a
pure chemical composition without ions such as chromium or iron causing
the colour. Under the microscope, the crystals appear clean, without alteration
chemical.

This result is confirmed by X-ray diffraction analysis. Jadeite
violet: violet-colored jadeite exists in several tones
different: pinkish purple, bluish purple and red purple.

In general, jadeite of this color is rather pale. We have long thought
that purple jadeite was colored by manganese ions, but no data
convincing analytics has confirmed this view. In 1974, GR Rossman
suggested that the purple color was due to ferrous transition elements
and ferric. This was confirmed by carrying out measurements of the spectrum of the
visible light.

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