The examples I have tried were performed on a Gray Scale wedge image of 10 levels: 0 28 57 85 113 142 170 198 227 255 By high intensity, I mean mapping increasing the level of gray scale intensity in an image from lower value to higher values. For example, a Pink diamond found in India or South Africa can’t compare to a Pink diamond found from the Argyle diamond mine in Australia.I wanted to generate Gray Scale wedge image of 10 Levels in MATLAB and then increase and decrease its Intensity. Different diamond mines produce different shades or tones of colors. The origin of the diamond is also another factor that affects the color intensity. Also, the way colorless stones are being cut (Brilliant cut) is different from how Fancy Color Diamonds are cut (Modified). How intense the color will be is also greatly affected by the diamond cut and shape of the stone. However, the greater the color intensity of the rough, the greater the intensity of the polished diamond will be. The image above depicts four diamonds all graded by GIA as 'Fancy Intense Pink' with different strengths of the same intensity grade (and color tone) between the stones.Įxactly what color intensity a diamond will have will not be able to be determined from the rough stone. Therefore, it is actually quite common to see two diamonds of the same intensity grade where one looks as if the color is more intense than in the other. The 1-10 scale breaks down different stones of the same intensity grade between a weaker or stronger color.Ī ‘Fancy Intense Pink' diamond with a 1-3 grade is a very weak ‘Fancy Intense Pink’ and actually borders a ‘Fancy Pink.’ A ‘Fancy Intense Pink’ diamond with a 8-10 has a very strong color and actually borders a ‘Fancy Vivid Pink’ diamond. Since there is such a wide range of colored diamonds, even stones of the same intensity can look quite different from one another. At LEIBISH, the intensity of each diamond is graded on a scale of 1-10. However, there is a significant difference between a Fancy Light Blue and a Fancy Vivid Blue or a Fancy Light Pink and a Fancy Intense Pink. For example a Blue diamond or a Pink diamond, which are of the rarest in the fancy colored diamond family, are quite costly and difficult to find. The intensity of the color has a direct affect on the value of the stone. The GIA also defines how well the color and intensity is distributed throughout the stone. A diamond certificate will specify 'even' or 'uneven' according to the percentage of the color distribution. Only Fancy Light, Fancy, Fancy Intense, Fancy Vivid, and Fancy Deep.įrom left to right: Fancy Orange, Fancy Intense Orange, Fancy Vivid Orange, Fancy Deep Orange For example, Orange diamonds cannot be found in Faint, Very Light, or Light intensities. However, it is important to understand that not every diamond color appears in all intensity levels. It is clearly shown that the intensity scale begins with very soft colors and progressively displays a richer color stone. The nine grades in the scale are įor example, the following image depicts the full scale of color intensity in Pink, Blue, and Green color Diamonds. GIA developed an intensity grading scale in order to categorize the intensity levels in the diamond. The intensity level can be anywhere from a very soft shade to a very strong shade, and the stronger the shade the more valuable the diamond is. The main color, and if there is a secondary color, together define the color tone, however the strength of color is defined by the intensity level. The secondary color of the diamond (AKA overtone)Ī Collection of LEIBISH Fancy Pink Diamonds.The color in Fancy color diamonds is built from three parameters:
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