Amblygonite Gemstone Information



Amblygonite's name comes from the Greek words for "blunt angles" in allusion to its variously angled cleavages. Gem quality amblygonite is mined in Brazil and Burma, as well as France and the USA. Amblygonite gemstones are generally white or creamy, but can also be colorless or lovely shades of pale yellow, green, blue, beige, gray, brown or pink.

The prices, uses and value of Amblygonite vary tremendously, depending on the size and quality of the gemstone. AJS Gems is your source for the highest quality colored stones 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 Amblygonite 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!

Amblygonite Ring                        Amblygonite Jewelry

 

Attributes

Origin The main commercial sources of Amblygonite have historically been the mines of California and France. Fine gemstones are also found in Brazil and Burma.
Color White to yellow, pink, green or blue.
Refractive Index  1.577 - 1.591
Chemical Composition  LiAl(PO4)(F,OH)
Hardness 5.5 - 6
Density 3.00 - 3.13
Crystal Structure Triclinic
 
Amblygonite is a phosphate mineral. It is found in lithium and phosphate rich pegmatites as a primary mineral. At times it makes up a significant percentage of the rock although this fact may be overlooked. Amblygonite, as it turns out, is easily confused for other host rock members such as quartz and albite. The general appearance of amblygonite does resemble these two minerals especially the albite but it can be differentiated with a flame test for lithium, density and by its unusual cleavage.

Amblygonite's name comes from the Greek words for "blunt angles" in allusion to its variously angled cleavages. Amblygonite has no less than four different directions of cleavage at different angles from one another and with different qualities of cleavage. This is very different from quartz which has no cleavage and albite which has only two directions of cleavage at nearly 90 degrees.

Amblygonite has a fairly compact structure. This fact gives rise to a somewhat high specific gravity. Of course a specific gravity of around 3.05 is not considered very high in the mineral kingdom. But a look at amblygonite's formula shows the elements sodium, lithium, aluminum, hydrogen, fluorine, oxygen and phosphorous. None of these elements are heavy and a mineral composed of these elements would be expected to have a specific gravity lower than 3. Both quartz and albite have lower specific gravities than amblygonite.

Since amblygonite has lithium in its formula, it gives a reliable lithium result with a flame test. Powdered amblygonite which is placed in a gas flame will produce a brightly colored red flame. This is evidence for the presence of lithium.

In amblygonite's chemistry, the lithium and sodium substitute for each other but there is a greater percentage of lithium than sodium. A mineral with the same structure and chemistry as amblygonite but with more sodium than lithium is called natramblygonite. There is also substitution between the hydroxide and fluorine. Amblygonite also forms a solid solution series with the often associated mineral montebrasite and differs from amblygonite by being richer in hydroxide instead of fluorine. The structures of the two minerals are the same and there are no discernible differences in physical properties between the two. In fact many specimens labeled amblygonite are in fact montebrasite.

Amblygonite rates as a 5.5 -6 on the mohs scale of hardness and thus it is generally better suited for jewelry such as pendants and earrings.  Amblygonite has a refractive index of 1.577 - 1.591.  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.  Amblygonite gemstones crystallize in the triclinic crystal system, the least symmetrical of the crystal systems.  Crystals are rarely distinctly developed and frequently show twin lamellae.

 

Color

Amblygonite comes in very light pink, very light yellow and a lovely light mint green colors of Amblygonite are colorless,  blue, beige, gray or brown.


Cut
 
For the most part, it is the transparent form of amblygonite that is used as a gemstone. Due to its softness and cleavage, Amblygonite gems can be difficult  to cut for jewelry, meaning well cut faceted Amblygonite gemstones can be a rare and special treat. 
 
Although it can be found in cabochons and beads, it is usually faceted in order to bring out the delicacy of the stone's color.  The gem is rarely set into rings or bracelets because such jewelry pieces take a lot of wear and tear. It is much more popular set within pendants, necklaces, earrings, and pins.
 
 
Treatments
 
Amblygonite gemstones are not known to be treated.
 
AJS Gems fully discloses any and all treatments to our gemstones.
 

Sources
 
Amblygonite is a rare accessory mineral in granitic pegmatites.  It has also been found in high temperature tin veins.  Amblygonite occurs with spodumene, apatite, lepidolite, tourmaline, and other lithium-bearing minerals in pegmatite veins. It contains about 10% lithium, and has been utilized as a source of lithium.

Sources include Minas Gerais, Brazil; Montebras, France; Germany; Varutrask, Sweden; Sakangyi, Burma; Yellowknife, Northwest Territories, Canada. In the United States localities include Pala District of San Diego County, California; Newry, Hebron, Buckfield and Topsham, Maine; Taos County, New Mexico; Yavapai County, Arizona and the Black Hills area of South Dakota.

 
  
Mythology
 
The name Amblygonite is derived from the Greek word for blunt in, reference to its nearly 90 degree cleavage angles.
 
Amblygonite's nickname is "The Prophet Stone".
 
Amblygonite is a soothing and healing mineral, and works very well with mild anxiety and stress. It will calm nerves and quell excessive sensitivity.
 
Amblygonite is a great stone to have around in the presence of intense mental activity, stress or deadlines.

  

AJS Gems Wholesale Loose Amblygonite

Highly competitive prices-The widest choice of varieties-Satisfaction quality guaranteed
Shop with confidence no risk - Money - Back - Guarantee
SSL Secure Payments - Fast FedEx delivery 2-4 working days

 

 Email to a Friend Friend's Name:
Friend's Email:
Your Name:
Message:

.