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During its time in the Earth, the diamond is subjected to forces that cause planes of carbon atom displacement within the diamond crystal. This displacement changes how light passes through the crystal, and the planes selectively cause red light to be transmitted.
Because red diamonds are exceptionally rare, they are studied very carefully before being faceted. The red color is produced by glide planes, called lamellae, within the stone.
The goal is to orient the lamellae in a way that will maximize the amount of red light transmission. The work of the person who plans and executes the cutting of these diamonds is very important.
Proper planning and cutting is important for all colored diamonds, but it is especially important when cutting red.
Proper cutting can produce a more saturated and even color when the diamond is viewed in the face-up position, resulting in a finished product that is exponentially more valuable.
One of the first colored diamonds to grab newspaper headlines was the Hancock Red. The Hancock Red had been around for a while.
It was cut from rough mined in Brazil , and one of its first owners was Mr. Warren Hancock, a Montana rancher who was also a collector of colored diamonds.
At that time very few people were interested in colored diamonds, and most people had never thought about them.
Hancock's death. Hancock's estate. The spectacular price brought enormous media and celebrity attention to colored diamonds.
The rough used to cut the Moussaieff Red was found by a farmer in an alluvial deposit in western Minas Gerais, Brazil.
The rough weighed They cut the rough into a triangular brilliant known as The Red Shield. The diamond was purchased by Shlomo Moussaieff in the early s and is now owned by Moussaieff Jewellers Ltd.
Sale prices for the diamond have not been revealed. Sydney DeYoung, a Boston jeweler, purchased an estate jewelry collection at a flea market. Included in the collection was a hat pin with a large brownish red stone that was thought to be a garnet.
Sometime after the sale, DeYoung became suspicious about the identity of the stone. It was almost inclusion free, it had no signs of wear, and it had a complex cut.
All of these suggested that the stone was not a garnet. DeYoung took the stone for gemological testing, and the results were shocking. The stone was a 5.
DeYoung knew that the stone was valuable but passed away in , a year before the 0. His will directed that the diamond be given to the Smithsonian Institution upon his death.
Today The DeYoung Red is on display at the Smithsonian, in a case that is occupied by some of the world's largest, rarest, and most valuable diamonds.
Their inventory size and prices are the best in the business, and their expertise in this highly specialized field will ensure that your diamond is set in a way to maximize its color.
Click to Visit. Largest and best inventory of fancy color diamonds Best prices for fancy color diamonds Industry leading expertise will ensure the color of your diamond is maximized in its setting Leading bidders in the annual Argyle auction Highest quality jewelry available online Free shipping Free resizing within first 2 years of purchase Items comes with professional appraisal for insurance 30 day no questions asked free return policy.
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For the less expensive colors, such as yellow and brown, clarity will be more of a factor. Red diamonds are known for their small sizes.
The majority of red diamonds on the market are less than 1 carat in weight. Only 5 red diamonds are known to exceed 5 carats in weight, the largest being 5.
Only a handful of red diamonds are discovered on an annual basis throughout the world, and most of them do not exceed 1 carat.
Most red diamonds display fluorescence when placed under UV light. In the case of colorless diamonds, the presence of fluorescence is generally considered to lower a diamond's value.
This is in fact completely arbitrary, as the blue glow may or may not appeal to a buyer, but it certainly has no bearing on the composition, durability or beauty of a diamond.
However, it is a generally accepted notion in the diamond assessment world that the presence of fluorescence will lower a diamond's value.
Just like with clarity, in the case of fancy color diamonds, this is not a detracting characteristic if it is present. If anything, its presence ensures the buyer that the diamond is genuine, as fluorescence is not recreated in lab grown diamonds.
If a red diamond has fluorescence, it will not add or detract from its value or resale value in any way. Often, when a buyer is seriously interested in the purchase of a very expensive diamond, they will ask for the diamond to be examined by the Gemological Institute of America GIA to ascertain that it is genuine.
Of all the diamonds, red diamonds are the only ones whose size of under 1 carat will not disqualify them from being an investment stone, since so few red diamonds larger than that can be found in the market.
Red is not a commonly synthesized diamond color, as it does not usually appeal to the general mass of diamond consumers.
The majority of red diamonds that are mined each year come from the Argyle diamond mine in Kimberley, Western Australia.
Since the majority of the world's pink diamonds are discovered in the Argyle Mine , it follows that the majority of red diamonds are discovered there as well, although this is not exclusively the case.
However, if a red diamond is traced to the Argyle mine in origin, it lends additional value to the diamond's price as is the case with all Argyle diamonds.
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Red Diamond House Restaurant. See 2 Reviews. Select a Rating! View Menu.General Geology: Articles about geysers, maars, deltas, rifts, Red Diamond domes, water, and much more! Each pink Ergebnisse Em 16 traces a glide plane within the diamond where carbon atoms have been displaced. Bonanno April Smit, Christopher M. This is in fact completely arbitrary, as the blue glow may or may not appeal to a buyer, but it certainly has no bearing on the composition, durability or beauty of a diamond. Top Reviews of Red Diamond House Restaurant stars - Based on 2 reviews. 07/03/ - MenuPix User. 04/04/ - George Varghese Food was fresh and hot. What failed was the Desert Selections was just Jello. Should have Pies, Ice Creme, Pudding, or at least Cookies. Furniture was old, outdated. Best Restaurants Nearby. Best Menus of Bonnie Doon. Chinese Restaurants in Bonnie Doon. Nearby 3/5.