Suave

1975 DeBeers: Diamond Earrings, Print Ad $6.00

1972 Diamonds by DeBeers Happy Anniversary vintage ad $9.99

1945 DeBeers Diamond Ad San Francisco Temple Emanu-El $15.00

3 Round Diamond Debeers 14 K White Gold Pendant 17″ Rolo Chain $799.00

1951 Seaside Romance Art DeBeers De-Beers Diamond Ad $8.79

1982 Print Ad DeBeers diamond ring John Newcombe smile gift jeweler jewelry size $6.99

1963 DeBeers Diamonds Woman Lake Richard Frooman art Ad $12.99

1976 De Beers Diamond for Men DeBeers Color AD $3.95

1976 De Beers Diamond for Men DeBeers Color AD $3.95

DeBEERS Diamond magazine ad 1942 Engagement Couple $9.95

1962 DeBeers Diamond Jewelry AdLove A Land of Sweet Discoveries $3.00

1977 DeBEERS A DIAMOND IS FOREVER Vintage Print Ad DIAMOND FLOWER PIN $4.99

1980 DeBeers Diamonds ad $4.00

1962 DeBeers Diamonds Schmidt Art Gazebo De-Beers Ad $9.89

1981 Tearful girl didn’t care about diamond DeBeers Ad $9.99

1972 DeBeers Jewelry Ad Diamonds Make a Christmas Gift $4.00

1958 DeBeers Diamonds “Bright Messenger of Love” Painting Leona Wood Vintage Ad $9.95

1946 DeBeers Diamonds Wedding At Bryn Mawr Paul Darrow Art De-Beers Ad $9.89

1949 DeBeers Diamond Ad Honeymoon in New Orleans art $10.88

1949 DeBeers Diamond Ad MAINE honeymoon Cikovsky art $12.50

San Juan Capistrano CA 1945 DeBeers Diamond art Ad $12.50

1951 DeBeers Diamond Clip JEWELRY Color Full Page ad $9.99

1980 ad DeBeers Diamonds man Darts dart game PRINT AD $7.03

1981 DeBeers Diamond Ad skiing man edges competition $12.50

DeBeers Diamond Ad 40s BRIDE Groom Altar art $10.88

1959 AD DeBeers diamonds Diamond is forever-William Harris art $9.99

1973 DeBeers Diamond Sea Creature Pin on swimsuit Ad $15.00

1973 DeBeers Diamond Ad Nature’s gift to men 4 women $15.00

1975 “A Diamond Is For Now” Vintage DeBeers Ad $12.49

1960 DeBeers Diamonds Leona Wood Art De-Beers Ad $9.89

1960 DeBeers Diamonds Engagement Day De-Beers Ad $9.89

1958 DeBeers Diamonds Lovely Miracle De-Beers Print Ad $9.89

1953 De-Beers Diamonds Dream Of Love Charles Rain Art DeBeers Print Ad $9.34

DE BEERS Enchanted Lotus Bracelet * NIB * 18k Wt Gold * 69 Pave Diamonds DEBEERS $1,200.00

1987 DeBeers: A diamond is forever., Print Ad $7.00

1993 DeBeers Diamonds: The first time I gave her a diamond.., Print Ad $7.00

MAD AS A HATTER A DIAMOND IS FOR NOW DEBEERS 1979 AD $9.99

1981 DeBeers Diamonds Magazine Print Advertisement $10.00

Debeers Engagement Ring -1 CTTW 3 Round Brilliant Cut Diamonds 14k Gold Band $1,495.00

Debeers Engagement Ring – .5 CTTW 3 Princess Cut Diamonds 14k Titanium Band $495.00

1959 DeBeers Diamond Harris Art De-Beers Print Ad $9.34

1971 Print AD DeBeers Diamond is forever gift of love eye hand expensive ring $6.99

1950 De-Beers Diamonds Honeymoon Hugo Art Debeers Ad $9.34

Debeers Engagement Ring 1.00 CTTW Princess Cut Center Diamond Platinum Mount $2,995.00

DeBEERS DIAMOND .61 ct tw 3 Stone PENDANT ~ Certificate GAL Appraisal $1,855.00

1961 DeBeers Diamonds Bride To Be Art De-Beers Ad $9.89

1951 DeBeers Diamond Jewelry Ad Seaside Romance by Dufy $4.00

1961 DeBeers Happy Browning Art De-Beers Diamond Ad $9.34

Magazine Print Ad 1973 DeBeers Mines Diamonds $10.00

DeBeers Diamonds Ice On Ice Collection Magazine Ad $10.00

1948 DeBeers Diamond Engagement Ring Willa McNear Eznar Hansen Art Ad $9.34

1963 Vintage DeBeers Consolidated Mines Diamond JEWELRY Lady in Pink Color Ad $9.99

Debeers Style 3 Emerald Cut Diamond .75 CTTW 14 Karat Yellow Gold Ring $1,495.00

Debeers Style Diamond Engagement Ring – 1.25 CTTW – 14k White Gold – I, H-I $2,195.00

1968 DeBeers DIAMONDS AD~couple walk on beach~VINTAGE $8.24

Vintage Magazine Print Ad 1973 DeBeers Diamonds $10.00

1951 DeBeers Diamond Clip Jewelry Color Ad $9.99

DeBeers Platinum Round Cut Diamond Engagement Ring .74CT F-VVS2 TRIPLE EXCELLENT $8,850.00

1954 DeBeers Jewelry Diamond”On Wings Of Love” Art AD $8.47

1942 DeBeers Diamonds Marriage Name De Beers Ad $10.99

1966 DeBeers Diamond Owl Bird Snail JEWELRY PIN Ad $9.99

Princess Cut 1.00 Ct Debeers 3 Diamond Anniversary Engagement Ring 14K WG $1,795.00

3 Round Diamond 1-1/2 Ct. Debeers Anniversary Engagement 14K Yellow Gold Ring $2,995.00

Half DeBeers Classic Micropave Band $2,000.00

1955 DeBeers Diamonds Girl In Love Rain Art De-Beers Ad $9.34

1951 DeBeers Diamond Jewelry Ad Honeymoon in the Snow $4.00

1951 DeBeers Diamond Skiing Honeymoon art Ad $10.88

1950 DeBeers Diamond Ad Autumn Honeymoon J Hugo art $10.88

1947 DeBeers Diamond Mrs Richard Knight Lauck Art Ad $8.79

1956 Ad Debeers Diamond Bright Star Constellation Orion $6.99

1980 Print Ad Debeers Diamond Think Big Rings Carat $6.99

1955 DeBeers Diamond Important Moment Art DeBeers Ad $9.34

1956 Constellation Lyra Saslow Art DeBeers Diamonds Ad $9.89

1948 DeBeers Diamonds Caroline Johnston Lauck Art Ad $10.99

1988 DeBeers A Diamond Is Forever Magazine Ad $10.00

1986 DeBeers A Diamond is Forever Vintage Print Ad $4.99

1971 DeBeers A Diamond Is Forever Man & Woman Mirror ad $8.99

1947 Press Photo Princess Margaret Rose Elizabeth Blue White Diamonds DeBeers $33.88

1953 DeBeers Diamond Jewelry Clip Ad $9.99

1956 AD Debeers Diamonds Miracle of Love by Pierre Ino $6.99

1979 DeBeers Diamonds Bracelet Chain Driving Glove Steering Wheel Vintage Ad $9.95

1968 DeBeers Diamonds Katzman Boat Art De-Beers Ad $10.99

1948 De-Beers Diamonds Sea Island Georgia DeBeers Ad $8.79

1945 St. Thomas Church NY~DeBeers De-Beers Diamonds Ad $6.99

1959 DeBeers “Diamond is Forever” Photo “Moment of Promise” by Stern Vintage Ad $9.95

1980 Print Ad DeBeers Diamond Bracelet Throwing Darts $4.99

1985 DeBeers Diamond Engagement Ring Gold Jeweler Vintage Print Ad $9.95

1955 De Beers DeBeers Jewellery Diamond Jewels Vintage 50s Print Ad $14.49

1950 DeBeers Diamond Clip Jewelry Ad $9.99

De Beers Jewellery DeBeers White Gold THICK logo Diamond Band engagement ring ne $2,292.02

1988 DeBeers Diamonds Holiday Celebration Couple Stairway Love Vintage Print Ad $9.95

1955 De Beers DeBeers Jewelry Anniversary Diamond Jewels Vintage 50s Print Ad $14.49

1947 DeBeers Diamonds Pretty Woman Vintage Magazine Print Ad $9.89

1970 De Beers DeBeers Jewelry Ad Diamonds Make a Gift of Love $6.00

1941 DeBeers Diamond print Ad Leon Karp art $12.50

DeBeers Diamonds mans ring advertisement 1980 print AD $9.99

DON’T I LOOK SUPER MAN DEBEERS DIAMOND PRINT AD 1979 $6.99

1946 VINTAGE DEBEERS DIAMONDS LADY SLEEPING IN THE COULDS PRINT AD $7.74

1967 DeBeers Jewelry A Diamond Is Forever Ad $9.99

1952 DeBeers Diamonds Wedding Day Church Scene art by Brian Connolly PRINT AD $9.99

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Diamond the Multifaceted Gem

Everyone knows that diamonds is the hardest gemstone and women all over the world go crazy to own a diamond jewelry. This beautiful gemstone is renowned for its lustrous beauty, but very few people know of its ability to be used in other fields like electronics, machinery etc.The two aspects of this gem stone are so diverse in association and nature that one does not really connect the two uses with each other.

The diamond has certain very unique properties that enable it to be used in these various applications. It is the hardest substance on earth, has an extremely high thermal conductivity, is optically transparent and has high electrical resistance.

The hardness property of the diamond makes it amenable to be used as a cutting tool, especially for hard substances like marble, granite and hard wood. It is embedded in mechanical tools to enable the shaping of engine blocks and automotive components.

Once the process of developing synthetic diamonds was discovered, these synthetic diamonds were obviously the most preferred option for use in machinery. Apart from the cost, there are many other benefits of using synthetic diamond in tools. synthetic diamond growth can be controlled and monitored to produce desired shape and consistency. This is not the case with respect to natural diamonds where nature determines the shape, size and contours of the diamond based on various random natural events. Since the development of the synthetic diamond takes place in a laboratory, the level of impurities and mineral inclusions can be controlled. Due to these reasons and more the synthetic diamond today is sturdier as compared to the natural ones.

Another property that lends itself to use in mechanical work is that of thermal conductivity. The type IIa diamond can conduct up to 5 times more heat than the metal copper. The fact that it can absorb high levels of heat means that it can be used to reduce the friction in many engineering parts. Including the diamond as a ‘heat sink’ helps in extending the life of the machinery since it avoids wear and tear due to friction and heat. ‘Slices’ of synthetic diamonds are also be used for other industrial and surgical tools.

Much research is being done to use diamond chips instead of silicon chips in computers and it is being said that such computers would be 1000 times faster than the existing ones.

Even though the diamonds were being produced synthetically in the early 1990′s, they had not made their appearance in the jewelry industry. Large synthetic diamonds could be used only by using a lot of energy and ultra-modern technology. Since the engineering and mechanical market needs were yet not being met completely by the synthetic diamond supply, the proliferation of the synthetic diamond in the jewelry industry was abated. Another reason why the synthetic diamonds did not make their way into the studded necklaces was the fact that most of the synthetic diamonds being produced were still yellow or brownish in color.

The development and growth process of large diamonds required for the tools industry itself took too long. In 1990, De Beers claimed to have produced the largest synthetic diamond; a yellowish brown piece that was about 14.20 carats. This diamond alone took 500 hours to grow. Three years later they reported having produced a 34.80 carat crystal that took 600 hours to grow. Another few years and De Beers claimed that it was possible to produce 30 carat crystals in lesser time. But now one can find synthetic diamonds in many fancy colours and in white colorless shades too.

Even though there were great obstacles in perfecting the art of making gem quality synthetic diamonds, some companies forged ahead and continued to research the process. The challenge that they faced was that they could not avoid the nitrogen from entering the diamond while during the process of production, the gas that gives the diamonds the yellow color. GE was the first company to produce an almost colorless synthetic diamond by eliminating nitrogen from the process. This was done by using a metal flux, a substance that melts and dissolves other material in it. Special compounds were added to the metal flux to keep the nitrogen from entering the process chambers. Even though De Beers had also discovered the art of making synthetic colorless diamonds, neither company released their experiments and the colorless gems that came from them into the market. However, a Thai-Russian joint venture in Thailand distributed lab made colorless diamonds in the market.

Since the jewelry market does not require large pieces, these colorless synthetics are faster to grow, produce and sell in the market. Though the synthetic diamonds caters to a larger audience of the gem industry, they increase the possibility of being swindled, fraud and non-disclosure in the trade. As the production process is perfected and better quality colorless synthetics are produced and marketed each year, the challenge for the professionals in the jewelry industry becomes harder.

Source: GIA

About the Author

Mithun Rao holds a professional degree in gemology and jewelry design from Mumbai and has spent more than 10 years in the industry. He manages his own jewel store business and takes out the free time to write and maintain his site on gemstone information and diamond industry.