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Colors of blue sapphires5/15/2023 ![]() So, in terms of gem grading and market valuation, the color of the highest grade and most expensive blue sapphires will have a hue of Blue, a tonal range of 7 to 8, and Vivid saturation. The hue of the sapphire below would be described as very slightly violetish Blue, while the hue of the second stone shown below and the blue sapphire ring shown at the beginning of this article is Blue. For blue sapphire, the perfect hue would be simply Blue– not greenish Blue or violetish Blue. In grading gem colors, we normally emphasize the dominant hue by capitalizing it. ![]() Some gem colors are described as two hues– such as green blue, signifying equal parts green and blue, or greenish blue for a color proportionately more blue than green. Hue can be described as the name of a color, and relates to the actual wavelength of the visible light emanating from the gem. We begin by grading the color of blue sapphires in terms of hue, tone, and intensity– for a thorough discussion of color grading gems, visit the color grading page at our Gallery of Gems. We’ll begin by discussing gem grading and market preferences.Ĭolor is a very complicated phenomenon in gemstones, presenting many challenges for gemologists and gem traders. The more complicated answer has to do with gem grading and market preferences, the physical characteristics of natural sapphires, the geological sources of sapphire including Ceylon, Burma, Kashmir, Madagascar, Thailand, Australia, and Montana, and the various methods of color enhancement and heat treatment of sapphire. The best color for you is the one that pleases, stimulates, or excites you! Some people prefer light pastel colors, others prefer rich intense colors. Every person has unique abilities to perceive color, based on such things as age, health, culture and genetic gifts. Our clients often ask “What is the best color blue sapphire?” There are two answers– the obvious is that personal preference should dictate your color choice.
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