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Archive for March 30th, 2007

Blue Diamond Gemstones Loose

Friday, March 30th, 2007

Blue Diamond Gemstones LooseBlue diamond gemstones loose are perhaps the best way of buying blue diamonds. You can find out quite easily if the diamonds are genuine by getting the diamonds checked. If diamonds are set into rings and other jewelery then it is very difficult to get a proper assessment of the true value of the diamond.

When buying blue diamond gemstones always ensure you get a independent gemological laboratory appraisal. This ensures that you know the value of the diamonds and can get adequate insurance also.

Diamonds can occur in nearly any color, though yellow and brown are by far the most common. Colored diamonds contain impurities or structural defects that cause the coloration, while pure or nearly pure diamonds are transparent and colorless. Colored diamonds tend to cost a lot more than the colorless. For example a one carat pink fancy diamond can sell for up to five times the price of a colorless diamond of the same quality.

Fancy diamonds are usually graded with the diamond in the face up position. This due to the fact that their cut can influence the apparent color and also because their price is based upon the face up color of the diamond. The more intense the color the higher the price.

Some diamonds are colored artificially using irradiation or a high pressure treatment. These are not worth as much as the natural colored diamond of course. The GIA does not consider treated diamonds as fancy diamonds.

Some points to keep in mind.

Always judge a diamond against a non reflective white background. A folded business card is good with the diamond placed in the fold.

If possible use comparison diamonds to determine the color grade. One cannot really rely on memory and professional grades don’t so neither should you.

Ensure you get a proper grading from a laboratory such as the GIA for example (more lab contacts are available from the laboratory list link on the left.

Keeping in mind the above it is possible to find and enjoy blue diamond gemstones loose to have set into your favorite jewelry.

Antique Cut Loose Diamonds

Friday, March 30th, 2007

Antique Cut Loose DiamondsWhen it comes to antique cut loose diamonds, there is a difference between ‘vintage’ and ‘antique’ jewelry. This is mostly one of age. Some jewelers consider any jewelry of between 30 to 50 years old as vintage and anything from 50 to 80 or more years old as antique. In the world of antiques, however, only items that are 100 years old or more are considered antique.

So the differences can be subjective and dependent upon viewpoint. This should be clearly understood when it comes to buying antique jewelery of any sort. It is particularly important when buying antique cut loose diamonds and one should make every effort to try and establish the date the stones were cut.

Having said that, keep in mind that antique cut loose diamonds are subject to the same criteria as any other types of diamonds. The value of the diamonds is also dependent on the quality and weight of the diamonds.

The diamonds should be appraised to establish the weight and quality and should be done by an independent gemological laboratory. Many are listed in the links to the left.

The cut, color, clarity and carat weight as well as the age and, if possible, history, should be established as this is what will tell you the value of a diamond. Most antique diamonds are of good or fair quality with some being exceptional depending on when and where it was made. European antique diamond rings can be quite valuable in terms of the diamond. Antique cut loose diamonds may also have an antique value over and above the general value of the stones, especially if they are over 100 years old (The true definition of an antique).

Vintage or antique diamonds charm the romantic in all of us who treasures old world values and who are somewhat nostalgic for life in another time. Vintage and antique cuts can be elegant, and when the stones are set, often more decorative than contemporary designs, with intricate, filigree lacing and fine, detailed sculpting. Antique cut loose diamonds can be a treasure to hold and take pleasure in.

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