Search Results - Diamond
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In mineralogy, diamond (from the ancient Greek ?d?µa? - adámas "unbreakable") is an allotrope of carbon, where the carbon atoms are arranged in a variation of the face-centered cubic crystal structure called a diamond lattice. Diamond is less stable than graphite, but the conversion rate from diamond to graphite is negligible at ambient conditions. Diamond is renowned as a material with superlative physical qualities, most of which originate from the strong covalent bonding between its atoms. In particular, diamond has the highest hardness and thermal conductivity of any bulk material. Those properties determine the major industrial application of diamond in cutting and polishing tools. Diamond has remarkable optical characteristics. Because of its extremely rigid lattice, it can be contaminated by very few types of impurities, such as boron and nitrogen. Combined with the wide transparency, this results in the clear, colorless appearance of most natural diamonds. Small amounts of defects or impurities (about one per million of lattice atoms) color diamond blue (boron), yellow (nitrogen), brown (lattice defects), green, purple, pink, orange or red. Diamond also has relatively high optical dispersion, that is ability to disperse light of different colors, which results in its characteristic luster. Excellent optical and mechanical properties, combined with efficient marketing, make diamond the most popular gemstone. Most natural diamonds are formed at high-pressure high-temperature conditions existing at depths of 140 to 190 kilometers (87 to 120&_160;mi) in the Earth mantle. Carbon-containing minerals provide the carbon source, and the growth occurs over periods from 1&_160;billion to 3.3&_160;billion years (25% to 75% of the age of the Earth). Diamonds are brought close to the Earth surface through deep volcanic eruptions by a magma, which cools into igneous rocks known as kimberlites and lamproites. Diamonds can also be produced synthetically in a high-pressure high-temperature process which approximately simulates the conditions in the Earth mantle. An alternative, and completely different growth technique is chemical vapor deposition. Several non-diamond materials, which include cubic zirconia and silicon carbide and are often called diamond simulants, resemble diamond in appearance and many properties. Special gemological techniques have been specially developed to distinguish natural and synthetic diamonds and diamond simulants. The name diamond is derived from the ancient Greek ?d?µa? (adámas), "proper", "unalterable", "unbreakable, untamed", from ?- (a-), "un-" + daµ?? (damáo), "I overpower, I tame".[3] Diamonds are thought to have been first recognized and mined in India, where significant alluvial deposits of the stone could be found many centuries ago along the rivers Penner, Krishna and Godavari. Diamonds have been known in India for at least 3,000 years but most likely 6,000 years.[4]
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1. Russian Jewelry - Exotic And Unique
November 07, 2009
Russian jewelry has had a checkered history. The history goes back to more than 1000 years. The beauty of Russian jewelry was actually introduced formally during the reign of Peter the Great in 1719. He created what is known as the State Diamond Fund. He decreed that state jewelry was sacrosanct. The Romanov family could add to the Russian jewelry but could not use it for personal gains. Thereafter true to his declaration he and all the imperial heads of the Russian monarchy kept adding to the state jewelry. The pieces were stored by Peter the Great in the Winter Palace of St Petersburg. There... (read more)
Author: Anirban Bhattacharya
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2. South African Company to Begin Mining for Diamonds in Zimbabwe
November 06, 2009
South African company, New Reclamation Group, a private limited company is reportedly planning to form a venture with Zimbabwe to mine diamonds from a deposit that human rights groups say has been the site of military atrocities. This comes as the world's diamond control body called on Zimbabwe to clean up a lawless field, but stopped short of suspending the country from a process meant to keep "blood" gems off the market. Miners dig for diamonds in Marange, eastern Zimbabwe (File)South African company New Reclamation says it will begin mining for diamonds in eastern Zimbabwe this month ... (read more)
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3. How to Buy Affordable Diamond Earrings
November 06, 2009
If you are searching for affordable diamond earrings then you must consider 4C’S which are colour, cut, carat and clarity.
The first C is the colour of diamond and the colour is the natural tint of diamond. And always remember that if you are searching for affordable earrings then colour is the most important factor which you must consider. Diamonds with yellow tint is affordable compare to red and pink as they are expensive.
The next is the cut of diamond which you must consider. The cut of diamond refers two different categories first is the quality of diamond and second is the sha... (read more)
Author: white fleur
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4. Amethyst - Birthstone for February
November 06, 2009
If the purple depths of an Amethyst imbue you with a feeling of wellness, it is testament to the stone’s immense power. The ancient Greeks believed that Amethyst gave the wearer power and protected them against intoxication and overindulgence. To this day, Amethyst is symbolic of the struggles against addictive behaviors.
Amethyst is the birthstone for February. It is an affordable stone available in colors ranging from lavender to reddish or deep purple, and is very widely used in jewelry. The affordability and versatility of this gemstone makes it an ideal birthday gift.
Amethyst i... (read more)
Author: Suvarna Shetty
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5. Induction Cookware - Salamander Cookshop
November 06, 2009
Induction hobs only work with certain types of cookware.
We supply many different ranges to meet this need and are sure that you will find something suitable from the selection below:
Induction Cookware Manufacturers Berndes Induction Fissler Original Pro SKK Induction Le Pentole Le Creuset 3 Ply Couzon Cuisinox Elysee Le Creuset TNS Swiss Diamond Induction Swift Supreme How do Induction Hobs Work?
Induction hobs work using a strong electro magnet under the cooking area which creates an electric circuit when a suitable pan is placed on it. This then transfers heat... (read more)
Author: Salamander Cookshop
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6. A Guide to Buy Resplendently Regal Emerald Jewelry
November 06, 2009
Emerald, a serene-looking, young, and vibrant green-hued precious gemstone, is a beautifully enchanting transparent rock. This comes into versatile and variedly designed artful conceptions. However, to ensure its durability, taking care of gemstone bought, should be paid attention.
Hardness: On earth, diamond is the hardest gemstone known. It can scratch any other natural material easily. Moreover, this green beryl, with a hardness of 7.5-8 Mohs, makes it a relatively harder one. Therefore, this green alluring gem is an everyday item to be sported with almost very attire.
Toughnes... (read more)
Author: Rajesh Kumar
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7. Chloe and Van Cleef & Arpels Lucky Clover Chain Bags are Exclusive in Japan
November 06, 2009
We have introduced the Van Cleef & Arpels Charms Watch with a diamond-set cloverleaf charm. The impressive elegance of other Van Cleef & Arpels watches is admired by most modern fashionistas. If you are a bag addict and watch fan, you’ll be interested in the post. It the cooperation between Chloe and Van Cleef Arpels to design the Lucky Clover Chain Bags which are of the limited edition for the major luxury contributor Japan.
Though the demand for luxury goods including is declining day by day in Japan, also the Italian fashion house Versace just withdrew from Japanese market, we have to ... (read more)
Author: Tina Smith
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8. Nakshatra Diamond Jewellery : A Special Gift To Express Love
November 06, 2009
Diamonds are girls best friends and so nothing could be better than Nakshatra Diamond Jewellery for girls to win their heart.
Now it is no longer a dream for a girl to buy a beautiful diamond jewellery as it has become quite affordable nowadays. The jewellery lovers have lots of choices when it comes to selecting diamond studded articles for themselves or other near and dear ones. It can also be used to pay relief to a painful heart. Nakshatra Diamond Jewellery have wonderful collection of classic jewellery item that can bring smile on the faces of one's loved ones like mother, sister, d... (read more)
Author: Victoria Benjamin
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9. Buying Tips to Determine Right Gemstone Jewelry
November 06, 2009
Someone asked me where the rubies grew, And nothing I did say; But with my finger pointed to The lips of Julia. ~Robert Herrick
Monday afternoon: An emerald cut tanzanite and diamond border ring in white gold, luring with its soft velvety gleam, nestles in the showcase of a store’s window.
Wednesday night: It is embellishing the neck of a beautiful lady. The gem sparkles, as she dines on her anniversary’s candle lit dinner. What a lovely cherishing moment! But how did it happen?
How did her husband manage to find out a dainty and ethereal-looking piece of jewel for her? Eve... (read more)
Author: Rajesh Kumar
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10. Nokia 6600i Slide : A True Diamond
November 06, 2009
Nokia 6600i Slide is the most beautiful mobile phone you can ever find because it the right ingredients to make your successful and pull your business and personal life. You will definitely not find anything quite like this device anywhere in the world. Here are some of the reasons why the Nokia 6600i Slide is the best mobile phone all over the world.
Major Characteristics of the Nokia 6600i Slide
Nokia 6600i Slide is the most beautiful mobile phone that can live because of the useful and exquisite design that it has. It is portable and can be brought wherever you go. Having this mob... (read more)
Author: Eti Sharma
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11. Nokia E72 Vs HTC Touch Diamond 2: True Competition
November 06, 2009
Nokia E72 and HTC Touch Diamond 2 are two 3 G handsets. Both are embedded with pleasing features that make them complete business gadgets. If a feature is unavailable in one handset, then other unconventional feature will compensate for that. Mobile phone has reached to a level, where they can be used to access normal features as well as to do business. In market, there are several brands that are offering business devices. The two well-known options are HTC and Nokia E-series. Both companies offer exceptional combination of style and technology. Here, we see diverse features of Nokia E72 an... (read more)
Author: Martin dev
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12. Cubic zirconia jewelry - Better than diamond!
November 06, 2009
The origin of Cubic Zirconia is the cubic crystalline form of zirconium dioxide which is very hard in form and colorless but can be given various colors. It is in the form of crystals which is man made by combining Zirconia Powder and yttrium oxide at a temperature of 5000 degree Fahrenheit. The material is kept for some time to get cool and once it gets cooled beautiful crystals appear in sparkling and shiny forms which are very hard and durable. If gone through a UV rays Cubic Zirconia changes to yellow, or greenish yellow. The various features that make Cubic Zirconia distinguished with Dia... (read more)
Author: Tina Black
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13. Bracelet - Wristbands to enhance appeal
November 06, 2009
Bracelet is one of the type of wristband that is often available in various variants and types depending on the material and cost. Considering the material ,they can be of Gold, Diamond, Silver, Pearl, gemstone, Leather, white gold, Rose gold, garnet, Jade, Stainless steel, Copper, Brass with desired shapes, designs , weight and cost . Gold ones are available in the variants of 14 carat, 18 carat with availability in plain, Yellow Gold, Beaded, Yellow gold flat, Yellow gold light, white and rose gold , Twisted, Tri color, Yellow gold braided twist, White gold Large and polished, shiny gold... (read more)
Author: Cherry bruce
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14. Zenloc Celebrates Win at Gatwick Diamond Business Awards Breakfast
November 05, 2009
Barry Schofield, CEO of Zenloc Security Systems Ltd., was amongst the 2009 winners of the Gatwick Diamond Business Awards to attend the recent breakfast launch of the 2010 awards. The launch event, which took place on the 1st October 2009, saw the winners from the inaugural year gather together to swap success stories following their win, and to mark the opening of entries for the 2010 awards. The Zenloc Container Security Alarm won the prize for 'Innovation in Manufacturing' at this year’s award ceremony in March. The Gatwick Diamond is the term coined for the area from Reigate to the Coast ... (read more)
Author: Jumping Spider Media
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15. Buy Three Stone Diamond Engagement Rings Online
November 05, 2009
Those days are gone when people prefer round rings made of silver or gold and plain weddingbands. But now the trend is changing people are becoming more fashionable and they prefer stylish and unique engagement rings like three stone diamond engagement rings. These days you can find wide range of diamond rings in different colours, shapes, styles and designs.
Among couples three stone diamond rings are very popular this time. These rings come in beautiful and distinct designs. You can purchase it from online jewellery sites or you can design your own ring by giving your own ideas to the ... (read more)
Author: David Michal Jones
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16. What is a Norton Clipper?
November 05, 2009
Norton Clipper is the brand name of a line of motor operated concrete and masonry related construction machinery that's based out of Luxembourg. Their mostly cutters and saws are well recognized for their high level of quality and the fact that virtually all of them use diamond blades and drill bits.
Norton Clipper is also the developer of “Norton Silencio”. A new patented sound dampening technology that finally helps to solve this problem that always has been the bane of concrete, masonry and tile cutting machines and tools. So just what does the Norton Clipper line consist of?
The ... (read more)
Author: chriss tyrrell
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17. How to Find Perfect Diamond Engagement Ring
November 05, 2009
Diamond engagement rings are one of the most important purchases of your life especially for those men who are planning of a surprise proposal. There are lot of things which you must consider before purchasing your engagement ring. Here are few guidelines which will help you in getting a perfect diamond engagement ring.
The most important thing is to find the ring size of your partner and you can find it with a little detective work. You can take the size of her ring which she wears on her third finger or you can also ask about her size from her relatives or friends. By presenting a ring... (read more)
Author: white fleur
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18. How to Select Perfect Shape for Your Engagement Ring
November 05, 2009
Diamond engagement rings are very precious piece of jewellery and can draw attention of many people to the finger and hand of person who is wearing engagement rings. Therefore it is very important to select a perfect ring for your beloved. And the most important thing which you must consider if you want your ring to be perfect is the shape of the diamond.
There are many shapes in engagement rings. And it is not possible that all the shapes available in the market will look great on most of the fingers. There are many shapes which will look great on few fingers compare to others. And if yo... (read more)
Author: David Michal Jones
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19. 100 Free Bids and 5 Million in Private Equity Means More Steep Discounts on BidsTick
November 05, 2009
After almost a year of offering users unbelievably deep discounts on various luxury goods, from MacBook Airs to Rolex Watches, Bidstick.com has a couple of figures to celebrate with by giving away 100 free bids to its users while the other more significant amount is the fact that the Online Auction company is in the final stages of having the Diamond Institute of America secure a $5 Million, private equity financing for them.
The $5 Million equity financing is part of the Penny Auction site's pivotal strategic alliances, its targeting of merger acquisition targets and formation of joint v... (read more)
Author: Jason Carstairs
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20. Incredible Inexpensive Tractor Tires
November 05, 2009
A visit to your local tire company is an excellent way to learn which tractor tires are superior, and what's on sale. These stores employ trained pros to help select the tire that is's ideal for your requirements. It's possible that they will be ready to find the exact tire you're searching for in a used tire.Some varieties are tires with deep lugs, diamond treads, and standard rural tires. Each of these work for a variety of uses.Thus it is important that you get the right kind,and your rear tires do most of the tractor's work. The odds of getting stuck in the mud during your first tractor ri... (read more)
Author: Emil Dodson
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21. Affordable and Romantic Alternatives to Diamond Engagement Rings
November 05, 2009
Generally when we think of engagement ring diamond engagement ring come in our mind but there are many people who can not afford to buy diamond ring. And for this you do not have to feel bad because there are many affordable and romantic alternatives with which you can create your moment special.
The most important thing which you must remember is that engagement rings are all about its symbolism. The ring is symbol of love, commitment, beauty, promise and loyalty. And it is not necessary that your ring should be expensive or it should be of diamond. Always remember that it has to show on... (read more)
Author: white fleur
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22. Wedding ring - some important things
November 05, 2009
In every culture and custom exchange of ring is supposed to be an engagement. Ring symbolizes marriage or engagement. A spouse wears it to indicate a marital commitment to fidelity. A fiancé or a fiancée wears it to indicate his or hers engagement. A wedding or a wedding band is a jewelry item made up with metals. Not only in western countries but also in eastern countries exchange of rings is considered as commitment for lifetime. In certain countries wedding ring is worn on the base of the left ring finger. In other countries this is worn on the right ring finger. Today wedding band is gaini... (read more)
Author: mark fisher
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23. Designer Diamond engagement rings
November 05, 2009
The D day has come. It is the time to institutionalize your love care and tenderness for your better half. Wedding is once in a life time affair. And, special occasions require special gifts. You can set a different example to the whole ceremony from the engagement. Diamond engagement rings will create a redefined image of yours in front of your would-be better half. They have a unique design per piece. Manufacturers of these rings ensure that it is an art and each design is original. Diamond engagement rings use gold, platinum or white gold. The wide range of collection enables you to select ... (read more)
Author: Catherine Lopez
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24. Consider these sources for cost-effective diamond engagement rings
November 05, 2009
While the economy has not yet recovered fully and your earnings may not be that good to let you spend it freely on luxuries like diamond engagement rings, you still have hopes to buy one such ring for your bride-to-be. All you need to ensure is to give preference to the select places to source such rings. You should be aware of these sources if you are on tight budget and want to have a ring right now without borrowing much money.
There are in fact many places around you to explore for cost-effective rings that are equally great in looks and your woman will like it. But do not make the mi... (read more)
Author: Frank Luca
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25. Keeping Your Teeth Clean and Healthy
November 05, 2009
Hey San Diego! As you know keeping your teeth clean is one of the most important ways to look after your health and appearance. Not only will a nice smile with diamond-white teeth light up your whole face (and bring you dividends in business and relationships) but it will also mean you’re less likely to lose teeth and go through painful dental operations next time you visit your San Diego Dentist. Even more than that however, keeping your teeth clean and paying attention to your oral hygiene can help prevent the build up of bacteria in your mouth leading to a reduced risk of heart disease and ... (read more)
Author: Tracy Smithsher
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