Thursday, July 22, 2010

The 6 C’s of Diamonds

When measuring the qualities of a diamond, there are 5 major things that diamond evaluators look at. They consider a diamond’s cut, clarity, color, carat weight and cost. These 5 C’s determine the 6th C of diamonds … certificate.
Cut really is the craftsmanship applied in cutting the facets of Diamond. Cut of a diamond reflects light and responsible for the gem’s brilliance, sparkle, beauty and value. The cut of a Diamond refers not only to the quality of the cut, but also to the shape of the diamond and the number of its facets. A well cut diamond regardless of its shape, sparkles, has more fire and offers the greatest brilliance, and called “Brilliant Cut”.
Cut Too Shallow
Cut to Shallow
When a diamond is cut too shallow, light escapes through the bottom, reducing the brilliance of the stone, making the general appearance watery glassy and dark.
Cut too Deep
Cut too deep
When a diamond is cut too deep, light escapes through the bottom, reducing the brilliance of the stone, making the center appear dark.
Ideal Cut
Ideal Cut
Light entering the diamond reflects internally from facet to facet and is reflected back out only through the top. Therefore, an ideal cut yields maximum brilliance.
Color is the natural body color visible in a diamond and is the one C determined completely by nature, not man. As rule, the closer a diamond is to colorless, the more valuable and beautiful it is, the diamond color grading scale uses the letters of the alphabet, beginning at “D” (colorless) and going to “Z”.
Clarity is an indication of a diamond’s purity. Expert grade a diamond’s clarity on the number, size, type and location of inclusions and blemishes. A diamond with greater clarity will have greater brilliance and value.
A diamond’s size is measured in carat weight means carat is a unit of measurement for diamond. Diamond prices tend to rise exponentially with carat weight. Each carat is equal to Milligrams and divided into 100 Cents.
The one of the most significant part of today’s 6 C’s Diamond world is cost. If someone is unable to get the Diamond at best price it is worthless to but. This cost factor makes the 6th C
Certificate: – Perhaps the 5th ‘C’ when purchasing a diamond is the CERTIFICATE or diamond report. This important document validates the diamond’s characteristics. A diamond certificate from a ‘no name’ laboratory or jewellery shop is not worth the paper it’s written on, insist on quality grading documents. The world’s foremost diamond report and the leaders in diamond research are the inventors of the ‘4C’s ’; the GIA (Gemological Institute of America). There are other laboratories that also use the GIA methods and/or have a very good reputation they are:

1. GIA: – Gemological Institute of America
2. AGS: – American Gemological Society
3. HRD: – Antwerp World Diamond Centre
4. IGI: – International Gemological Institute
5. EGL: – European Gemological Laboratory
6. IGC: – International Gemologist Centre
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Wednesday, July 21, 2010

All About Diamonds

Every body know that diamonds is most beautiful stones in over the entire world but a very few people know that what is diamonds and where is it found? Diamond may be up to 3 billion years old, which is much older than their surface host rock. Diamond crystallization originates some 200 kilometers, or 320 miles, beneath the surface and the disaggregated crystals are merely transported to the surface via kimberlite and lamproite pipes. These igneous host rock formations are roughly cylindrical in shape and act as a conduit from the Earth’s mantle to the continental crust. Today, 75-80% of the world’s natural diamonds are used for industrial purposes and 20-25% for gemstones. Diamond may even be found in meteorites.

Diamond is a colourless exceptionally hard mineral (but often tinted yellow, orange, blue, brown, or black by impurities), found in certain igneous rocks esp. the kimberlites of South Africa. It is used as a gemstone, as an abrasive, and on the working edges of cutting tools. Composition: carbon. Formula: C. Crystal structure: cubic. Name derived from the Greek adamas meaning invincible. Relative density 3.50- 3.52. Cleavage eminent along octahedral faces. Fracture conchoidal. Tenacity brittle. Lustre brilliantly adamantine. Refractive index 2.417- 2.419. Dispersion strong 0.044. Diamond crystals form as cubes, octahedra , the most common gem form, and dodecahedra. Colourless to yellow diamonds which have a strong absorbtion line in the violet end of the spectrum are members of the Cape series. Color is usually pale yellow to colorless, but can also be brown, blue, green, orange, red, and black.

The most famous diamond bearing country is South Africa. The first diamond was reported in 1866. By 1869 an 83.5 carat diamond had been found and was named The Star of Africa. It was subsequently cut into a pear shape brilliant weighing 47.74 carats. The Golconda area of Southern India has been the source of some famous diamonds such as the Koh-i-nor (mountain of light 186cts cut to 108.92 cts and now in the Tower of London) and Jehangir. Diamond is widespread in Brazil, most stones being small but of good gem quality. Alluvial diamonds have been found in most states of the USA. White and fancy coloured diamonds such as pinks and pinkish browns are mined at Argyle in North Western Australia. Other important producers are Russia, now the fourth largest producer, and China.
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Learn About Diamonds Before Buying

Diamond is the hardest known naturally occurring stuff, scoring 10 on the relative Mohs scale of mineral hardness and having an total hardness value of between 167 and 231 gigapascals in a number of tests. Diamond’s hardness has been known ever since antiquity, and is the origin of its name. Nevertheless, aggregated diamond nanorods, an allotrope of carbon first synthesized in 2005, are now known to be even harder than diamond.
The hardness of diamonds also contributes to its suitability as a gemstone. Because it can just be scratched by other diamonds, it maintains its polish exceptionally well, keeping its luster over extensive periods of time.
Unlike hardness, which sole denotes resistance to scratching, diamond’s toughness is only fair to good. Toughness relates to a material’s capacity to resist breakage from strong impact. Diamonds cut into certain particular shapes are therefore much more prone to breakage than some others.
Diamonds appear in a variety of transparent hues colorless, white, steel, blue, yellow, orange, red, green, pink, brown or colored black. Diamonds with a detectable hue to them are known as colored diamonds. Colored diamonds have in it impurities or structural defects that cause the coloration, while pure or almost pure diamonds are transparent and colorless.
The carat weight measures the mass of a diamond. One carat is defined as exactly 200 milligrams (about 0.007 ounce). The point unit equal to one one-hundredth of a carat (0.01 carat, or 2 mg) is commonly worn for diamonds of less than one carat.
The price per carat does not grow smoothly with increasing size. Instead, there are sharp jumps around milestone carat weights, as demand is much higher for diamonds weighing just more than a milestone than for those weighing just under. As an example, a 0.95 carat diamond may have a significantly lower price per carat than a comparable 1.05 carat diamond, because of differences in demand.
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Diamond Education

                      How to Know if a Diamond is Fake or Real

A diamond is a girl’s best friend! It is a beauty and unique nature makes it easy to admire. Diamond purchasing is a great task and an exciting pleasure. There are various types of diamonds so when buying real diamonds, one should learn about fake diamonds so that you will be able to distinguish between the fake vs. real diamond. Nowadays the best fake diamond is in great demand. Here are some of the simple solutions or the methods that will enable you to find out the difference between the fake vs. real diamond. The best way to know about the precious diamond is to acquire knowledge from a diamond professional. If possible take the diamond along with you to the shop and get all the details from the jeweler. The best fake diamond looks so similar to the real diamond that even a professional diamond jeweler may get confused and may have hard time to finding out whether it is a fake or the real diamond. In case you are not satisfied with the views regarding the real diamond from the professional, here is a way to find out which is a real diamond and which is a fake diamond.

The first method is to check the diamond with the help of diamond tester as it will help you to differentiate between real diamond and best fake diamond. It is an electronic tester that can check all the diamonds except the moissanite stone for which the diamond tester is not reliable. The best fake diamond is the cubic zirconia and the weight of this diamond is around 50% more than a real diamond of the same size and shape. This weighing test also can find out the difference between fake vs. real diamond.

Another method for checking the best fake diamond is the transparency test in which the diamond is placed up side down on the news paper and if the written matter from the newspaper is legible then be sure that the diamond is not the real one and it can be a best fake diamond. One of the disadvantages of this method is that some of the stones may appear to be a real diamond due its fine cutting. In this case, one needs to be sure about the cutting methods of the stones. This method is very common and enables you to find the real diamond from the best fake diamond.

The third method that helps you to differentiate between fake vs. real diamond is the fog test. Hold the stone or the diamond and blow some air from your mouth on to the stone, if the fog appears on the stone and stays there for next few seconds then it shows that the stone is a best fake diamond because in case of a real diamond, the heat disappears instantly. The oily layers and dirt on the stone might create some problems to differentiate fake vs. real diamond. Thus, before carrying out a test for best fake diamond, clean its surface properly.

The ultra violet test is another method that will enable you to find out the real diamond from the best fake diamond. The real diamond projects blue color light if put under the ultra violet light or the black color. There are two options, if the blue light does not appear, it can be best fake diamond or can be a high quality diamond.
All of the above tests can satisfy all the test conditions to differentiate between a best fake diamond and the real diamond.
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Friday, July 16, 2010

" Diamonds for Everyone “

“ Diamonds for Everyone ” – the only motto of our business.
Djewels Manufacturer, Wholesaler & Exporter of 100% Hall Marked, Customize & Certified Designer Diamond Jewellery in 18 K / 14 K Yellow / White / Pink Gold and Kundan Polki Jewellery in 22KT.
Djewels pioneer in using latest Diamond Jewellery making technology in ethnic and modern designs. Djewels House is a showcase of diamond jewelry exquisitely crafted to highlight the luminescence of diamonds since 1985, its majestic bonding with the undying radiance of precious metals. All our products are confirmed to the highest global standards (BIS – Certified) and in perfect taste with consumers worldwide. We remain ever so focused in our vision of supplying the most fashionable & reasonably priced original designs at a global level through our wide network of national & international establishments.