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The green color in natural green diamonds originates from radiation the diamond crystal is exposed to during and after its formation. The fancy green diamond price, like all fancy colored diamonds, is influenced primarily by its color.
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Natural Green Diamonds Guide: Prices, Authenticity, History & More Asteria Colored Diamonds
GREEN DIAMONDS ARE AMONG THE MOST WONDROUS WORKS OF NATURE, CREATED IN A UNIQUE PROCESS SPANNING OVER MILLIONS OF YEARS. THEY INCLUDE SOME FAMOUS BREATHTAKING DIAMONDS IN UNIQUE VIVID SHADES. THE SPECIAL STORY OF GREEN DIAMONDS PLACES THEM SOMEWHERE IN THE MIDDLE OF THE SPECTRUM BETWEEN THE RAREST OF DIAMONDS AND THOSE MORE COMMONLY PRICED DESPITE BEING VERY RARE. HOW DO THEY FORM? HOW MUCH DO THEY COST? HOW RARE ARE THEY? ALL THAT AND MORE, IN THIS ARTICLE.
How Are Natural Green Diamonds Formed? How Are Natural Green Diamonds Formed? The green color in natural green diamonds originates from radiation the diamond crystal is exposed to during and after its formation. This formation process, be it of a colorless or fancy colored diamond, takes place under conditions of high pressure at a depth of 150-200 kilometers below the ground, at temperatures ranging from 1,000 to 2,000 degrees centigrade over millions of years. While colored diamonds usually form as a result of a "contamination" in the pure carbon crystal (such as yellow diamonds, created by the presence of nitrogen molecules), the green color generally occurs after the diamond has completely crystalized, usually when it makes its way out from the deep underground through volcano vents and is thereby exposed to direct radiation. The intensity of a diamond’s green color is significantly influenced by the type and duration of radiation it is exposed to, as well as its size. Alpha particle radiation penetrates the diamond, affecting only its skin tone. Since this radiation does not penetrate into the body of the diamond, it acquires a rare and valuable, light green color. In contrast, beta and gamma radiation are particulate radiations that can penetrate the diamond’s body and give it a deep green color at higher intensities, such as Fancy Intense, Fancy Deep & Fancy Vivid. Green diamonds that come in contact with natural beta and gamma radiation are so rare, mainly because these conditions occur in nature in only 0.1% of cases.
Types of Natural Green Diamonds Types of Natural Green Diamonds 1. Green Skin Tone - these diamonds feature the color green on the outer surface only and constitute the majority of green diamonds that were directly exposed to alpha radiation and took on a light tone at a relatively low intensity. 2. Green Body Color - these diamonds are absorbed in green throughout their body, and their hue is deeper and more intense due to direct exposure to beta and gamma radiation. They are considered very rare and desirable, especially among collectors. You may also like our green diamonds for sale You may also like our green diamonds for sale There are no products matching the selection.
Fancy Green Diamond: Color & Pricing Fancy Green Diamond: Color & Pricing The fancy green diamond price, like all fancy colored diamonds, is influenced primarily by its color. The color of a Fancy diamond is the key parameter determining its rarity and pricing, and it leads the rest of the parameters by far. The color scale of the world's leading gemological institute, the GIA, is divided into 9 color intensities: Faint, Very Light, Light, Fancy Light, Fancy, Fancy Intense, Fancy Vivid, Fancy Deep, and Fancy Dark. Faint representing a bright and pastel shade and Fancy Deep representing a strong and deep green color.
The color definition is divided into three criterions: Hue, Tone, & Saturation. Hue - represents the diamond’s dominant color. Although there might be secondary shades present as well, the hue signifies the main color according to which the diamond is categorized, in this case - Green. Tone - represents the degree of light or darkness in the diamond, a feature that directly impacts the stone’s appearance. Tone does not appear in the GIA certificate as a separate parameter, but is rather part of the color definition. For those seeking to purchase a green diamond with a strong green hue and save money at the same time, it is recommended to purchase a diamond with a darker tone. Saturation - saturation represents the intensity and strength of the color. Diamonds with a strong saturation are considered rarer and therefore more expensive.
Green Diamonds Secondary Hues & Green Diamonds Secondary Hues & Pricing Pricing Secondary hues found in green diamonds are yellow, brown, gray, and blue. Most green diamonds have a secondary hue (sometimes two) that affects the pricing of the stone.
The impact on the pricing is determined by the type of the secondary hue, or in other words, if the diamond’s secondary hue is less rare than the green hue, like yellow or brown, it's value will be lower. But if the secondary hue is the rare, coveted, and popular blue color - the value and popularity of the green diamond will soar. As always with fancy colored diamonds, the primary hue appears last in the color definition of green diamonds, with the secondary hues preceding it on the certificate. The definition of the primary hue (for example: Blue/Blueish) indicates the degree of the color’s dominance. For example: Yellow Green diamond signifies a yellow hue with relatively high dominance (40%) against the primary green hue (60%), while Yellowish Green diamond signifies a less dominant yellow hue (25%) against the primary green hue (75%). * These percentages are for illustration purposes only and do not represent actual statistics. Since most green diamonds have one or more additional hues, pure green diamonds, especially those with natural body tones, are considered rarer and therefore priced higher, unless the secondary hue is blue with the same intensity.
Distribution of Color in Green Diamonds Distribution of Color in Green Diamonds Since the diamond’s green color is created by direct exposure to radiation, only the areas that are subject to such exposure will acquire a green hue. Subsequently, most green diamonds exposed to a superficial alpha radiation that doesn’t penetrate the diamond’s casing have an uneven color distribution, making green diamonds with equal distribution particularly rare. Compared to Skin Tones diamonds, green diamonds exposed to beta and gamma radiation that penetrates the diamond’s body usually get not only a spectacular and extremely rare color intensity, but also a more even and uniform color distribution that enriches the diamond’s appearance, enhances the color, and gives it a much higher monetary value.
Loose Green Diamonds: Pricing by Carat, Clarity & Loose Green Diamonds: Pricing by Carat, Clarity & Cut Cut The 4 C’s are the parameters used by gemologists for grading white and fancy colored diamonds, and they include: Color, Carat, Clarity & Cut. Color, as mentioned above, is the most important parameter influencing the diamond’s definition and pricing. However, the other three also influence the diamond’s definition and pricing and can help you understand its characteristics. For example, the higher the carat (the diamond's weight) the exponentially higher its value rises, because the price per carat of a green diamond increases significantly as the overall weight of the diamond rises.
Cut & Shape - What's the Difference? Cut & Shape - What's the Difference? The diamond polisher chooses the right shape for the green diamond before cutting it, and during the cutting process itself the other qualities mentioned above, such as polishing, symmetry, and clean cutting, are implemented as well. For example, any diamond polisher knows that a round shape is not suitable for fancy colored diamonds. This shape is excellent for reflecting white light and therefore is used frequently when cutting white diamonds. But when it comes to fancy colored diamonds whose greatest value is their color (the more intense and vivid the better), it is probably the poorest choice, because the white light weakens the color. However, shapes like Radiant, Pear, Cushion, etc. are more preferable for green diamonds and fancy colored diamonds in general.
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