Ammolite Cabochon Stabilized Tri color Geometric Designer Hand Cut Korite Ammonite Alberta Canadian Precious Gemstone Rare Opalized

Ammolite Cabochon Stabilized Tri color Geometric Designer Hand Cut Korite Ammonite Alberta Canadian Precious Gemstone Rare Opalized


Ammolite is a rare and valuable opal-like organic gemstone found primarily along the eastern slopes of the Rocky Mountains of North America, mostly in Canada. It is made of the fossilized shells of ammonites, which in turn are composed primarily of aragonite, the same mineral that makes up nacreous pearls. In 1981, ammolite was given official gemstone status by the World Jewellery Confederation, the same year commercial mining of ammolite began. It is still a fairly new stone that is used in jewelry making, and can be hard to find.It was designated the official gemstone of the Province of Alberta, Canada in 2004 and the official gemstone of the City of Lethbridge in 2007. In a remote locale outside Lethbridge, Canada, Korite operates the world's largest and most successful Ammolite mine.

Type - Cabochon
shape - Tear drop
color - Red Green And Blue
size: 20mm x 12mm x 4mm thick
weight: 8.175 carats

The iridescence is due to the microstructure of the aragonite: unlike most other gems, whose colors come from light absorption, the iridescent color of ammolite comes from interference with the light that rebounds from stacked layers of thin platelets that make up the aragonite. The thicker the layers, the more reds and greens are produced; the thinner the layers, the more blues and violets predominate. The color present in Ammolite is caused by light interference during refraction into the many layers of the gemstone. Each color in Ammolite represents a different layer of the gem material. So, depending on the number of fine layers in the rough, everything from one color to the full visible spectrum will be displayed. Since the play of light varies, every Ammolite gem shows a unique array of color.

Ammolite is a very fragile and soft stone known to flake like mica. If it is not treated and stabilized it will crack or shatter. Through Years of Research and Development, the Korite mine in Canada has mastered specialized cutting techniques that have increased the durability of Ammolite cabochons I purchase ALL of my Ammolite material right from the Korite Mine.

The natural hardness of Ammolite is 3.5 to 4.0 on the Mohs scale. However, Korite caps the Ammolite gem layers with a protective spinel crystal, increasing the hardness to an exceptionally durable 8.0. These assembled gemstones are known as triplets.

Korite Mine uses specially designed equipment, micro layers of the gemstones are polished revealing the brighter and more colorful layers of the gem.

This cabochon is a very good size for a pendant. It has AMAZING Bright Red/Orange and Green flashing color, and has a great flat surface, and terrific polish. IT IS STABILIZED and ready for use in jewelry. The photos do not really show the intense flashing and depth in real life.

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