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New Articles
1 Palaeolithic age
As a species, we love to adorn ourselves with jewelry, makeup, hair accessories. We do it now to enhance our looks, to attract a mate and because it just makes us feel good about ourselves. Some forms of adornment are symbolic - like...

13 Shapes
The cut of a diamond refers to the way the stone is shaped and polished, how the facets are arranged and how deep or shallow it's cut. There are various cuts of diamonds that refer to that, many of them patented. Both Asscher and Princess...


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10 Fluorescence



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We're all familiar with the 4Cs of diamonds - cut, color, clarity and carat weight. But diamonds also possess a quality called fluorescence that's part of the evaluation and assessment of a diamond. It's actually called photo-luminescence and it's caused by small amounts of the chemical boron in the diamond. It's activated by UV light.

It's graded by how much blue there is in the diamond - None, Faint, Medium, Medium blue, Strong, Strong Blue and Intense Blue. At one time, this was a highly-prized quality in a diamond and the demand for a blue-white diamond was high. The blue indicated the fluorescence of the diamond, while white was a reference to the overall color of the body of the stone. This has decreased over time as consumer preference shifted towards the more colorless stones.

The tide of public preference may be shifting back to the blue-white diamond, but you want to be sure, when buying a

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Today's Article

7 Gem cutting - how it has changed over the years (50% of the original rough diamond is lost during
How does a lump of mineral or crystal become a dazzling diamond, ruby or sapphire? It's an amazing process called gem cutting or lapidary and makes all the difference in the final value of the stone. It was developed first in Venice in the...
diamond, that you examine it under a variety of conditions, such as sunlight and fluorescent light, as well as a jeweler's black light. Some diamonds with a fluorescent quality can become hazy in daylight or even glow out on the dance floor!

Colorless diamonds have become increasingly rare and expensive. The color grades of D (flawless) to G are going to be hard to come by at a reasonable price. If you're buying a diamond with a color grade of H or higher, some fluorescence may actually be a good attribute for it and increase your stone's value and attractiveness, as the blue fluorescence can offset any other gradations in the stone, such as a yellowish tone.

Although some diamonds have a yellow or orange fluorescence, most reputable jewelers will recommend against a diamond with this quality, unless you're buying a colored diamond in the same hue, as a similar fluorescence will enhance and intensify that color.

 

Today's #1 Resources

17 Care of diamonds
Diamonds are durable and strong, but should be cared for as though they were fine breakable china or more fragile gems. They can chip or scratch if you're not careful, and they can get quite dirty with oils from your skin and cosmetics,...

How to Buy Diamond Engagement Rings
There is much to consider when purchasing a diamond - especially diamond engagement rings! The tradition of presenting a woman with a diamond engagement ring when proposing began in 1477 when Archduke Maximilian presented ...

 

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COLUMBUS, Ind. - The Marion Diamonds 16-and-younger softball team finished pool play with a 4-0 record in the USSSA World Series in Columbus, Ind.
The issue of 'blood diamonds' has once again made the news: Farai Maguwu, director of Zimbabwe's Mutare-based Centre for Research and Development (CRD), languishes under the long arm of Zimbabwe's law, on alleged charges related to his research on Zimbabwe's Marange mines.
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