This page is devoted to Zircon gemstones. Zircons are
found in many places throughout the world, and in
many colors. Most of these stones will be from East
Africa, except for the blue zircons and a few from
Nigeria. Most zircon is heated, as are all blue
zircons. Many of the honey brown stones respond very
well to just a gentle heating, turning them a lighter
brighter color such as the yellow stones from
Tanzania. Zircon is the birthstone for December and
has a hardness of 6 to 7.5 If zircons are cut in a
certain orientation, you will see a strong doubling
of each facets.
Grading System Used
Color is the most important and complex to grade. Color is made up of three components, hue, saturation and tone. Color will be graded on a scale of 1 to 10 taking these three factors into consideration.
Clarity is graded on a scale of 1 to 10, with 10 being loop clean under a 10X loop.
Brilliance - will be a combination of Cut, Sparkle, light return, Proportion and Crystal. Graded on a scale of 1 to 5, with 5 being the best.
Total Quality Rating - Is the combined score of these 3 with a possible best score of 10
Grading System Used
Color is the most important and complex to grade. Color is made up of three components, hue, saturation and tone. Color will be graded on a scale of 1 to 10 taking these three factors into consideration.
Clarity is graded on a scale of 1 to 10, with 10 being loop clean under a 10X loop.
Brilliance - will be a combination of Cut, Sparkle, light return, Proportion and Crystal. Graded on a scale of 1 to 5, with 5 being the best.
Total Quality Rating - Is the combined score of these 3 with a possible best score of 10
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Gem 979 - Red Zircon$719.00- 14.73 ct. A red zircon from Tanzania cut into a lively round design.
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Gem 701 - Yellow Zircon$221.003.16 ct. This is a stone from Tanzania that has been gently heated to this yellow golden color.
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Gem 466 - Yellow Zircon$263.003.86 ct. This stone is from Tanzania and has been gently heated to produce the yellow color
