The
diamond is the birthstone for April and is also the symbol of a sixty year
anniversary such as a Diamond Jubilee. Diamonds are the hardest
occurring natural material and there are only two man-made materials that
are harder than a diamond. (The two man-made materials are ultrahard
fullerite and the even harder aggregated diamond nanorods which are made
from ultrahard fullerite, both forms of carbon. Don't ask us about
them. We haven't a clue.) While a diamond is by definition a
10 on the Mohs hardness scale in a relative hardness scale a diamond is 15
times harder than quartz or glass and is about 4 times harder than the
next hardest naturally occurring material, rubies or sapphires. This
hardness makes the diamond ideal for many industrial applications.
The diamonds hardness also helps it to retain its value in its use in
making jewelry. Because the diamond is so
hard,
it will retain it polish and can be worn everyday without dulling the
shine of the stone. Softer gemstones can lose their polish over time
as the surface of the stone it abraded by dust and sand. While this
makes it seem like all diamonds have the same hardness, actually diamonds
from a specific area in Australia are know to be harder than other
diamonds. These Australian diamonds were formed as the result of a
single crystallization event where as most other diamonds were formed as a
result of multiple stages of heating and pressurization resulting in
multiple layers of crystallization. These ultra-hard Australian
diamonds are frequently use in making tools to polish other diamonds.
About 130 million carats of diamonds (57,000 pounds) are mined annually. About 80% of the mined diamonds are used for industrial applications and the remainder are used for jewelry making. Roughly 49% of the mined diamonds originate from southern Africa and the majority of these are controlled by the De Beers Corporation. The use of diamonds in engagement rings dates back to the mid-1930s. At that time the De Beers Corporation began one of the most successful advertising campaigns in history. There advertising, based upon the phrase "A diamond is forever" was an essential element in the change in fashion trends toward using diamonds in engagement rings. Prior to that point, many different gemstones were used in the rings. This advertising campaign continues today and is one of the reasons that the price of diamonds remains high. Another reason for the high price of diamonds is the control over the supply of diamonds that is exercised by the De Beers Corporation. The largest diamonds discovered are named and become a party of history. The Cullinan Diamond, found in 1905, is the largest gem quality rough diamond ever found and has been incorporated into the British Crown Jewels. One of the diamonds cut from the Cullinan Diamond, the Cullinan I or the Great Star of Africa, was the largest gem quality cut diamond at 503.2 carats. As part of the Crown Jewels, this diamond is owned by Queen Elizabeth. The yellow-brown Golden Jubilee Diamond, found in 1985, is now the largest at 545.67 carats. The Golden Jubilee Diamond is now part of the Royal Thai Palace crown jewels. The largest flawless, colorless (Grade D) diamond is the Centenary Diamond (unveiled as a cut stone in 1991) which weighs 273.85 carats. The Centenary Diamond is valued at about $100 million. The pear shaped Millennium Star is the second largest at 203.4 carats and is owned by the De Beers Corporation. You can find more information on diamonds in Wikipedia, the free encyclopedia here. Please select the picture above-right, or select here to view our selection of cubic zirconia diamond simulants. Simulants are chemically different from diamonds but have an appearance that simulates a diamond. You can read information on cubic zirconia as a diamond simulant here. |
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This article is licensed under the
GNU Free Documentation License. It uses material from the
Wikipedia article "Diamond"
Last updated 4/09/2007
| This WigJig web page is provided as
part of WigJig University - College of Jewelry Making Techniques. We
try to provide interesting jewelry making techniques using beads, jewelry wire and
other jewelry supplies. We
hope that the jewelry making skills taught on these web pages will provide you enough information for you to
incorporate these techniques in your own jewelry making projects. For beginners, we suggest
that you start with a visit to our
Beginners Jewelry Making pages. These pages discuss the skills necessary
for making jewelry in the detail that beginners need. We also suggest that
beginners to jewelry making might need to visit the
WigJig
University College of Jewelry Making Designs for jewelry making
projects using the skills and techniques shown here.
Most, but not all of the jewelry supplies shown here can be purchased in our WigJig store. We try to have a complete selection of jewelry supplies in our store including chain, wire, glass beads, findings, watches, tools, etc. The jewelry making projects shown here do not use Sterling Silver. The reason for this is simple, it is harder to get good pictures of Sterling Silver wire components than with colored wire including gold-filled, copper, or brass wire. Any project shown in colored wire can be made in Sterling Silver wire. |