Chrysoberyl Gemstone Information


Chrysoberyl

 

Chrysoberyls are the third hardest naturally occurring gemstone and stand between corundum and topaz on the hardness scale. The chrysoberyl family includes colorless or yellow transparent Chrysoberyl, Cats Eye Chrysoberyl and Alexandrite. Ordinary chrysoberyls are a yellowish-green and transparent to translucent in clarity. Chrysoberyl has often been referred to in the literature as chrysolite due to the common olive color of many of its gems, but that name is no longer used in the gemological nomenclature.

Valued for thousands of years, chrysoberyl is a surprising gem that you'll love as much for what it does as for how it looks. Chrysoberyl is an action gem, changing and moving in response to light. In the gem world, special effects are known as phenomena. The gem varieties of chrysoberyl respond to light in surprising ways.  For example, one variety of chrysoberyl is color-changing alexandrite, which is red in incandescent light and green in daylight. In the entire gem kingdom, no other gem has a color change so dramatic.  Chrysoberyl can also be found in a faceted variety, which has a honey-gold to green color. It may remind you of yellow sapphire, topaz, tourmaline, or citrine. But next to the other attention-grabbing varieties, plain faceted chrysoberyl is often overlooked. As a result this gem is surprisingly affordable.  Chrysoberyl, no matter its variety, is very durable, with a Mohs hardness of 8.5. It is an excellent gem for everyday wear and perfect for men's rings. Cat's-eyes are especially popular in men's jewelry.

The prices and value of Chrysoberyl can vary tremendously, depending on the size and quality of the gemstone. AJS Gems is your source for the highest quality  Chrysoberyl gems and many other precious 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 mainly it comes down to value and choice...

When buying your Chrysoberyl gemstone loose instead of a pre-set stone, you can be sure that 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!

Chrysoberyl Jewelry                               Chrysoberyl Ring 

At AJS Gems, you will find a large collection of high quality loose Chrysoberyl gemstones for making fine jewelry.

Attributes

Origin Brazil, India, Myanmar, China, Tanzania, Zimbabwe, Sri Lanka, USA (Colorado)
Color Yellow, rich gold, honey-brown to apple green and mint green
Refractive Index 1.745
Chemical Composition  BeAl2O4
Hardness 8.5
Density 3.73
Crystal Structure Orthorhombic
 

Chrysoberyl is a yellow to greenish-yellow, transparent to translucent, semi-precious version of Alexandrite. Chrysoberyl, like Alexandrite, is a beryllium aluminum oxide. Chrysoberyl is one of the hardest minerals, falling just below corundum (ruby or sapphire), and diamond. Chrysoberyl commonly occurs in granites and granite pegmatites while alexandrite occurs in mica schists. Chrysoberyl occurs in yellow, greenish-yellow, green, and brown.  Chrysoberyl is a very hard material, with a hardness of 8.5 on the Mohs scale.  Chrysoberyl has distinct cleavage and a vitreous surface luster.  Chrysoberyl has a refractive index of 1.745. 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.  Chrysoberyl crystallizes in the orthorohombic crystal system, forming in slender prisms and usually has a "tabular" crystal habit. Crystal twinning is common.
 

Color

Chrysoberyl is normally yellow, yellow-green, or brownish with its color being caused by the presence of iron.  Some very rare minty bluish-green chrysoberyls from Tanzania owe their color to the presence of Vanadium. The popular cats eye chrysoberyls come in many nuances between lemon and greenish yellow, and in honey colors and shades from mint green to brownish green, with rich gold colors generally the most valued.


Cut

Chrysoberyl is found in shapes such as ovals, cushions, rounds and emerald cuts. It may remind you of yellow sapphire, topaz, or citrine.  Faceted chrysoberyl is transparent, with few visible inclusions.

Cat's Eye Chrysoberyl gemstones are always cut as cabochons for it is the only cut that will allow the spectacular cat's eye effect to be displayed.  When cutting a cabochon, gem cutters will center the cat's eye slit so that it bisects the stone. The vast majority of cats eye gems have been native cut with uneven bottoms, but this is not a sign of haphazard work or poor lapidary skills. Specialists in cutting these gems are great masters at revealing and centering an eye, which frequently necessitates such unevenness.  Chrysoberyls exhibiting weak catseye effect are commonly faceted. 
 

Treatments
 
Chrysoberyl is not typically enhanced by any treatments.
 
AJS Gems fully discloses any and all treatments to our gemstones.
 

Sources 

Chrysoberyl is a very rare mineral, and its occurrences are limited. Large deposits exist in the Ural Mountains in Russia, where much Alexandrite has also been found. The best material in the Urals and perhaps in the world occurs near Sverdlovsk. The provinces of Minas Gerais and Bahia in Brazil have scattered localities. It also occurs as waterworn pebbles in Mogok and Pegu, Myanmar (Burma), and in Sri Lanka, particularly in Ratnapura. It is also found in small deposits in India, Tanzania, Zimbabwe, and Madagascar.  In the U.S., it occurs in the Gillette Quarry, Haddam, Middlesex Co., Connecticut; Topsham, Sagadahoc Co., Maine; and Greenfield, Saratoga Co., New York. Fairly large crystals occur near Golden, Jefferson Co., Colorado.
 

Mythology
 
The name Chrysoberyl is derived from the Greek words “Beryl”, meaning green and “Chryso”, meaning golden. The two words combined mean “gold colored beryl”. In spite what the name implies, Chrysoberyl is not actually a Beryl at all.
 
Chrysoberyls are known to be associated with discipline and self-control. They are said to promote concentration and the ability to learn and to help the wearer with striving for excellence.
 
In addition to this, they bring peace of mind, clearer thinking, and increased self-confidence helping one become more understanding of the fact that they have everything they already need to succeed.
 
Since ancient times, chrysoberyl has been regarded as a gemstone which protects its wearer and keeps disaster at bay.

On account of its golden tones, chrysoberyl is often also associated with wealth.

 

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