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Morganite: description, properties and photo

Morganite

Morganite is a significantly rare pink color variety of beryl mineral. Name of this gemstone was given by George Kunz, famous gemologist of Tiffany & Co. company in honor of his friend John Morgan, banker and mineral collector. In trading this gemstone can be incorrectly named as «pink emerald». Emerald and pink morganite are both varieties of beryl. Color range of morganite includes delicate pastel shades of pink, orangish-pink and peach. The more pink color is in a stone, the more expensive it is. Orange shades reduce cost of a sample. Due to optical properties a gemstone is excellent in jewelry, luster is good. High hardness is another valued property of morganite, that make it a perfect choice for applying in different types of jewelry. This pink beryls usually has good clarity even in large size. That is why presence of inclusions and cracks will dramatic reduce their price.

Morganite

For improving colors of crystals sometimes heat treatment or irradiation can be applied, but it doesn’t influence on their prices. Mining of gem-quality samples is conducted in Brazil, Madagascar, Namibia, Mozambique and other countries.

DEPOSITS

Brazil is a source that gives quite excellent morganites. There are two deposits in Brazil: the places near Galiléia and near Itambacuri. Also morganite comes from Afghanistan, Madagascar, Namibia, Russia (the Urals) and Mozambique. Samples from the USA can be refferred as collectible.

Morganite Crystal

Properties

Mineral:

beryl

Chemical formula:

Be3Al2Si6O18

Crystal Systems:

hexagonal

Mohs scale hardness:

7.5-8

Optical character:

Anisotropic

Cleavage:

imperfect in one direction

Density:

2.72 g / cm3

Lustre:

Vitreous to resinous

Refractive index:

1,577-1,583

Birefringence:

0.005-0.009

Dispersion:

0.015

Color:

pink, orangish-pink

Interesting facts

  • For the first time morganite was described in the Urals, Russia, in 1908 by famous mineralogist Vladimir Vernadsky.
  • The name «morganite» was given in honor of great person and mineral collector John Pierpont Morgan.
  • Giant crystals of morganite weighed over 10 kg were find in Brazil.
Morganite Crystal

History

Pink beryl variety was discovered and described in the Ural Mountains in Russia by Vernadsky V. In 1908. A little later morganites were found in Madagascar and in the United States, in the pegmatites of the Californian deposit Pala. George Kunz, the gemologist of Tiffany & Co., described the first samples found in Madagascar, and gave this pink beryl the name “morganite” in honor of the banker and the collector of minerals J.P. Morgana. The stone is applied in the jewelry collections of such brands as Van Cleef & Arpels, Louis Vuitton, Dior and, of course, the company that have engaged in its promotion on the market - Tiffany & Co.

Enhancement

In nature morganites with good pink color are very rare. Usually they are light. According to some sources, the color typical to mined material by nature, may slightly fade under the sunlight. Aiming tp improve saturation, morganites are often irradiated or treated with heating. The received result is stable. In some cases, depending on content of impurities, morganites may bleach as a result of heat treatment. The fact of enhancement is not diagnosed in gemological laboratories and does not affect the cost of morganites.

Morganite

Photo

On the photo: perfect pink beryl weighed 20.72 ct

On the photo: the pair of morganites

This gemstone is often cut in pear shape.

The sample 46.17 ct in the ring by Boodles

The morganite 175.52 ct in the pendant by Tiffany & Co.

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