AZGem Gems
October, 2001
The World's Most Useful
Gem & Jewelry Monthly Newsletter

Written by Carolyn Doyle for customers of
The Dorado Company
and other visitors to the website who subscribe.


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Usable Gems... and a little opinion.


This month I thought we should discuss one of the more popular gems, one that I have not mentioned to you for a while now. That gem would be... topaz.

Topaz is a venerable gem, known to the Egyptians and other ancient peoples as the gem of the sun god.

Topaz is also a very modern gem. Blue topaz is a real hot seller.

blue topaz, gem stones, gemstones

There are good reasons for the enduring popularity of topaz.

Topaz is a hard gem, with a hardness rating of 8 on the Mohs scale, so it resists scratching.

At the same time normal care should be used when wearing topaz because a single sharp blow can split a topaz, much like cleaving a diamond.

Topaz crystallizes from cooling volcanic vapors containing aluminum, silicon, oxygen, and florine.

Topaz crystals can grow to astonishing sizes. Crystals weighting more than one hundred pounds have been unearthed.

In nature, topaz occurs in several colors…

Reddish-yellow (Imperial Topaz) is the color associated with the sun god. It is found in small quantities in a number of locations around the world.

Pink topaz occurs in very small quantities, primarily in Pakistan, Sri Lanka, and Russia.

Orange-brown (sherry topaz) is found in Brazil, Sri Lanka, Russia, and other locations.

Blue topaz is found in exceedingly small quantities in Brazil and a few other locations.

Colorless (white topaz, diamond topaz, silver topaz) is by far the most abundant. It occurs in Brazil, Sri Lanka, and a number of other places around the world.

Colorless topaz is treated to produce commercial quantities of blue topaz.

Several shades of blue topaz are produced by heat and/or irradiation threatment. These types of treatment (or enhancement) are permanent.

These are the beautiful blue gems that are currently popular.

And now, topaz gems are being diffusion treated to reproduce several colors that are so rare in nature.

Diffusion is a process of driving a color-causing element into a (gem) crystal. The resulting color change is permanent.

We will explore this new treatment for topaz in more detail next month.

Topaz is a very good jewelry stone, and it is also easily affordable. We have a good selection of brilliant swiss blue topaz gems available at The Dorado Company.

While only a few blue topaz gems are shown on our web page, we have a large selection in one carat and above... and in several shapes. If you don't see what you want, just send me an e-mail. I'll let you know what we have in stock that fits your need.

Big Studs

If you haven't checked out the 7-mm stud earrings featured on our website, now is a good time to take a look..

The earrings make great gifts, and the low prices make them even more attractive!


Free Shipping

Don't forget, we're offering free shipping on all orders over $99.

Just deduct the shipping charge when you fill out the order form. If you forget, we'll deduct it for you.


Until next month… please, visit me anytime at for a great selection of colored gems at great prices.

Carolyn Doyle

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The Dorado Company
P.O. Box 8232
Scottsdale, AZ 85252-8232