A combination of pink and orange hues in a single stone is called padparadscha and it is particularly rare and valuable. Reputable gem dealers disclose all gem treatments, and test reports from gemological laboratories will also note any treatment.There are two unusual sapphire colors that deserve special mention. Some yellow and orange sapphires are heated with beryllium to produce a more vivid color. Heating some blue sapphires, for example, will dissolve rutile inclusions (titanium dioxide) and this has the effect of both improving the clarity and the color, since the titanium is absorbed into the crystal lattice and deepens the blue color. Sapphire color is sometimes improved through heating.

Violet sapphire is often classed with pink sapphire. A pure green sapphire in a large size is quite rare and valuable. Pure greens are rare, and most green sapphires have blue and yellow zoning. Green sapphire tends to be slightly less expensive than the other fancy sapphire colors. Jupiter is believed to be an especially auspicious planet and is connected with wisdom, good fortune, power and wealth.

Yellow sapphire is notable because it has a special place in Vedic astrology, where it is associated with the largest planet, Jupiter. Unlike pink sapphire, yellow sapphires can be found in larger sizes, and we usually have some top grade yellow sapphires in the 5+ carat size in our collection. Like ruby, pink sapphire is found mainly in small sizes, and almost all pink sapphires have some inclusions. Second, pink sapphire is nearly as rare as ruby, the red color of conundrum. Since pink diamonds are extraordinarily expensive, pink sapphires have become the next choice in fine pink gems. First, pink gems in general are very popular, including pink diamonds, pink spinel and pink tourmaline. If blue is the most popular color for sapphire, it is fair to say that pink is the second most popular color. Violet or purple sapphire is colored by vanadium. The combination of iron and chromium produces yellow or orange sapphire, while chromium alone produces pink or red (ruby), and iron alone produces a weak yellow or green. Blue sapphire is typically colored by traces of iron and titanium. The various sapphire colors result from the presence of different chemical impurities or trace elements. Pure corundum (aluminum oxide) is entirely colorless.

Sapphire green color