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Diamond Enhancements and Treatments

Monday, August 13th, 2012

In the market, there are various kinds of diamond pendants being sold as diamonds come in all shapes, sizes and colors. There are those which are in cut in the shape of a star. There are those huge diamonds which cost a lot of money. And there are those diamonds that come in different colors.

Those diamonds that have different colors are those that have been treated by the jeweler in an attempt to improve the appearance of the diamond. Jewelers often treat the diamond to improve its existing clarity and color. This treatment would be able to further improve the overall appearance of the diamond.

To be able to improve the appearance of diamond necklaces and diamond earrings, jewelers would inspect for the diamonds for microscopic cracks. If they do, they fill up the cracks with molten glass. This would result in the diamond going up the diamond grading system one grade higher. However sometimes they use bromine instead of molten glass. The downside of using bromine is that it results in discoloration at times. As a point of caution, always ask what materials were used when you buy treated diamonds.

There are various kinds of treated diamonds. Some colored diamonds are just painted. These painted diamonds often have a yellowish tinge around it. The color is used to make the diamond look more translucent and more beautiful. Some diamonds, with electron bombardment, are colored darker to entirely change the diamond’s original color. The other diamonds are treated by means of laser drills.

The laser drills are used to reach the dark spots in diamonds. These dark spots are bleached in order to lighten the color and make the overall color of the diamond more even. After they bleach the dark spots in the diamonds, the tiny holes inside are then filled with molten glass.

The treated diamonds are usually very beautiful. It can even be cheaper than diamonds that are not treated. It is good for buyers who cannot afford to buy the better quality diamonds. But with treated diamonds, they can get a good looking diamond for only a fraction of the price they would need to pay for a beautiful yet untreated diamond.

How does a diamond get from the mines to the stores?

Friday, July 29th, 2011

“Finding the rough diamonds is only the first step. Once diamonds have been mined and processed out of the ‘overburden’ (that is, the kimberlite rocks in which they are imbedded), the rough crystals are sorted and categorized according to their size, color, shape and other characteristics. At this point, a diamond can follow one of two routes.

The most common route is through the channels of DeBeers’ Central Selling Organization (CSO). Many people are familiar with DeBeers mainly because of their advertisements and commercials and because of the famous motto that they coined in the early half of the 20th century: “”A Diamond is Forever.””

While DeBeers’ market influence has decreased somewhat over the last few years, they still control the majority of the world’s diamond production (an estimated 30% to 40% of annual diamond production). The purchasing arm of the CSO not only buys diamonds from member mines around the world; it also finances mining technology for governments which do not have the means to mine their own deposits. Most of what is bought through the CSO is sent to London to be offered to buyers through DeBeers marketing arm, the Diamond Trading Corporation (DTC).

The DTC holds ten week-long selling sessions called ‘sights’ each year. These sights are by invitation only, and only a handful of diamond manufacturers from around the world (called ‘sightholders’) are allowed to attend. These sightholders may chose to cut the rough diamonds they buy themselves, or they may chose to sell some of the rough diamonds to smaller manufacturers.

These smaller manufacturers cut the rough diamonds and sell the polished gems either to jewelry manufacturers (who set the diamonds into finished pieces of jewelry and then sell the jewelry to jewelry retailers), or to diamond wholesalers (who then, in turn, sell the diamonds to diamond retailers).

In the less common route from mine to market, some independent miners elect not to sell their mine production to the DeBeers cartel. Instead, they offer newly mined diamonds directly to other world buyers. These buyers, in turn, may chose to cut and sell the diamonds themselves, or pass the diamonds along within the industry in a manner similar to that described above. ”