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Willkommen bei Green DiamondGreen Diamond. Met hart en ziel voor de stiel. Voor 'n teler is de waarde van zijn product zo kostbaar als diamant! Vaak zijn producenten echter te kwetsbaar in. Many translated example sentences containing "green diamond" – German-English dictionary and search engine for German translations. Exotische Grüntee-Früchtemischung mit köstlichem Grünen Tee aus China. Verfeinert mit sonnenverwöhnten Ananas- und Mangostücken, delikaten Aromen.
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Ingenious people are always trying improve the color of gemstones to increase their value. They do this by mimicking the processes of nature or applying treatments that alter the color of the gem.
The first documented treatment to produce green diamonds was an experiment done by Antoine-Henri Becquerel, shortly after his discovery of radioactivity in He irradiated some diamonds to see if they would be altered, and their color changed to green.
In , Sir William Crookes stored a few polished diamonds in radioactive salts. When they were removed from the salt, the diamonds had a green color at the surface and that color extended to a shallow depth.
This method of diamond treatment is not used today because the diamonds can be contaminated with radioactivity that does not decay to safe levels within a reasonable period of time.
The most common laboratory treatment used today to produce a green color in diamonds is irradiation of polished diamonds with a low-energy electron beam.
This treatment has been used since the late s, and it can modify near-colorless or yellow diamonds to produce diamonds with a green color.
Another treatment to produce green diamonds today is to apply a thin coating of silica to the surface of the polished gems. The coating can produce an attractive appearance, but it is very thin and can eventually be worn off by the abrasion of normal wear.
Diamonds that owe their green color to a treatment should always be sold with a disclosure that the color was produced by treatment, and state the method of treatment.
Because so many buyers prefer diamonds with a natural color, green diamonds colored by treatment generally sell for a significantly lower price than natural green diamonds of similar color, size and quality.
A Synthetic Diamond Treated to Produce a Fancy Deep Blue-Green Color: The blue-green synthetic diamond above had an "as-grown" Fancy Intense orange-yellow color, then post-growth irradiation and annealing treatments transformed it into a Fancy Deep blue-green color.
This synthetic diamond was produced by D. NEA Diamonds. Synthetic diamond crystals have been successfully grown in laboratories in a variety of colors.
Synthetic diamonds with a light green color and a greenish yellow color have been produced when small amounts of nitrogen and boron were incorporated into the diamond.
Green synthetic diamonds have also been produced by irradiating colorless or yellow synthetic diamonds. Because many green diamonds obtain their color from exposure to radiation in a laboratory a process known as irradiation , there have been concerns about their safety when used in jewelry.
All companies in the United States that apply radiation treatments to any type of gemstone must be licensed by the Nuclear Regulatory Commission.
These companies must use approved methods to treat the gemstones, then store them in a secure facility until their radioactivity declines below a level that would make them safe for use in jewelry.
Only then can they be released for jewelry manufacturing or sale to the public. The process of gemstone irradiation is very common.
Almost all of the blue topaz offered in stores today is colorless topaz that has been irradiated and then heated to produce a blue color.
In fact, often a very light green diamond contains a nice tint that adds uniqueness to the stone without breaking the bank. For instance, this 1.
Overall, the prices of green diamonds range greatly depending on their size, shape, color, quality and source. Review these examples for green diamond engagement rings for inspiration.
Surround your unique green stone with smaller colorless diamonds. The halo setting increases your Carat weight without taking away from the beauty of the green diamond.
Increase the surface area of your diamonds by choosing a three stone-setting. Emerald and tapered Baguette shapes make for excellent side stones.
Turn your vision for unique jewelry into a reality. See examples below for inspiration on green diamond necklaces and earrings. For personal assistance or to have an expert review your purchase, contact us at anytime.
BBC World News. Streeter Archived from the original on 9 February Retrieved 30 October So much so, that it is actually somewhat difficult to determine whether a green diamond is natural or treated.
Many polishers purposely leave what is referred to as a Natural along the girdle of the stone. The purpose of the Natural is so any diamond associations, such as the GIA, can identify the natural color of the stone and thereof award it a certified diamond certificate.
The most famous green diamonds, which have managed to make quite a statement among the rare diamond collectors, are of different shades and colors.
The Dresden Green is a It was reported as one of the largest and finest natural green diamond ever discovered. Having such a unique color combination, The Ocean Dream happens to be one of the rarest stones on earth.