Astrophillite Gemstone Information


astrophillite Gemstones


Astrophillite (or Astrophyllite) is a rare complex mineral with a triclinic crystalline structure, containing up to five different metals, and formed in cavities and fissures in syenite and other igneous rocks. Astrophillite is named from the greek words "aster" (star) and "filon" (leaf), due to the fact that the crystals of astrophyllite are often shiny and appear in thin sheets with pointed ends resembling foliage or stars stretched in thin plates. The combinations of the minerals in loose Astrophillite can create some unique and very beautiful cut gemstones.

The prices, uses and value of Astrophillite can differ greatly, depending on the size and quality of the  individual gemstone. AJS Gems is your source for the highest quality colored gems from across the globe, available at Bangkok direct wholesale prices. Creating the finest jewelry starts with finding the best gemstones, and the best gemstones are found at AJS Gems.


Why Buy Loose Gemstones Instead of Pre-Set Jewelry?
 
There are many reasons, but basically it boils down to value and choice.

When buying your Astrophillite gemstone loose instead of a pre-set stone, you can be sure you are getting the best value for your money.  Loose gemstones are less expensive, a better value, and you can really see what you are paying for.  The most important part of getting the right price and finding the best value is to first see what you're getting.  A jewelry setting will hide the inclusions inside a gem, and can deepen or brighten its color.  With a loose stone you can much more easily inspect the gem and see it for what it really is.  In this way you can get a better idea of its true worth and be sure you are paying a fair price.

The second advantage of buying a loose gemstone is choice.  You are free to pick the exact color, cut, shape and variety of the stone for the setting of your dreams, be it yellow gold, white gold, platinum or silver; prong set or bezel set with diamond accents.  You can experience the joy of creating your very own, one-of-a-kind jewelry design. Choose from a variety of jewelry settings and styles to create a completely original presentation that will perfectly suit your individual gemstone and will be as unique as you are!

Astrophillite Pendant                        

 
Attributes

Origin Mont-Saint-Hilaire, Quebec, Canada; Pikes Peak, Colorado, USA; Narsarsuk and Kangerdluarsuk, Greenland; Brevig, Norway; and the Kola Peninsula, Russia.
Color White, black, gray, yellow, golden yellow, orange yellow, brown to reddish brown.  Often a mix of colors are found in a single gemstone.
Refractive Index 1.67-1.75
Chemical Composition  (K,Na)3(Fe,Mn)7Ti2Si8O24(H2O)7
Hardness 3 - 3.5
Density 3.2 - 3.4
Crystal Structure Triclinic
 
Astrophillite is a rare, brown to golden yellow hydrous potassium iron titanium silicate mineral. Belonging to the astrophyllite group, the gemstone may be classed either as an inosilicate, phyllosilicate or an intermediate between the two. It forms an isomorphous series with kupletskite, to which it is visually identical and often intimately associated. Astrophillite gems are of interest primarily to scientists and collectors.

Heavy, soft and fragile, astrophyllite typically forms as bladed, radiating stellate aggregates. It is this crystal habit that gives astrophillite its name; from the Greek words astron meaning "star" and phyllon meaning "leaf." Its high, submetallic lustre and dark colour contrast sharply with the light coloured (felsic) matrix the mineral is regularly found within. Astrophyllite is usually opaque to translucent, but may be transparent in thin specimens.

Astrophillite rates a low 3 - 3.5 on the Mohs scale of hardness and thus it is recommended for jewelry such as pendants and earrings. Astrophillite has a spot refractive index of 1.67-1.75.  The refractive index (RI), measured using a refractometer, is an indication of the amount light rays are bent by a mineral. Birefringence is the difference between the minimum and maximum RI. When birefringence is high, light rays reflect off different parts of the back of a stone causing an apparent doubling of the back facets when viewed through the front facet.

Most gems have a crystalline structure. Crystals have planes of symmetry and are divided into seven symmetry systems. The number of axes, their length, and their angle to each other determine the system to which a crystal belongs.  Astrophillite gemstones crystallize in the triclinic crystal system, the least symmetrical of the crystal systems. Crystal habits include small tabular or bladed crystals often grouped in starlike aggregates with perfect cleavage. Also found in lamellar massives.

 

Color

The color of Astrophillite is usually golden yellow or yellowish brown, but also greenish brown, white, black, gray, yellow, and orange yellow specimens can be found.  Often a mix of colors are found in a single gemstone, due to the variety of minerals in Astrophillite.


Cut
 
For the most part, Astrophillite is cut into the cabochon shape for use in jewelry.
 
 
Treatments
 
 Loose Astrophillite gemstones are not known to be treated.
 
AJS Gems fully discloses any and all treatments to our gemstones.
 

Sources
 
Astrophyllite was first discovered in 1854 at its type locality; Laven Island, Norway. It is found in a few scarce remote localities Some more prominent localities include: on Laven Island and near Brevik, Langesundsfjord, Norway. In Greenland, at Narssarssuk and elsewhere. In Spain, south of La Guia, and at Monte Gali~neiro, Vigo, Pontevedra Province. In the USA, in Colorado, at St. Peters Dome, near Pikes Peak, El Paso Co., and in Maine, near Biddeford, York Co. From Mont Saint-Hilaire, Quebec, and the Red Wine complex, Labrador, Newfoundland, Canada. On Rouma Isle, Los Islands, Guinea. From Pilansberg, Transvaal, South Africa. In the Khan-Bogdinskii granitic massif, Gobi, Mongolia. From Mts. Yukspor and Eveslogchorr, Khibiny massif; in the Lovozero massif, Kola Peninsula; and other less-well-defined localities in Russia.
 
  
Mythology
 

Astrophillite is named from the greek words "aster" (star) and "filon" (leaf).

Astrophyllite is a wonderful crystal, said to be tranquil and honest. It is believed to connect the physical and spiritual, enhancing healing work.

Astrophyllite assists in absolving one from responsibility and in purging that which should be eliminated from your life to allow further development and progression.

This stone is said to enhance confidence, intellect, insight, and recovery.

 

 

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