Kanakapushyaragam8/31/2023 ![]() Conversely, a dark tone can be lightened by making a shallower cut. If the gem color is quite light, cutting a deeper stone will provide a richer hue. But gem cutters or lapidaries often have to make compromises when cutting a particular piece of material. Gemstones should be cut with proper proportions to maximize the light that is returned to the eye. Gemstone cut quality is an important factor and requires a lot of skill. Read more information on our guide and table of gemstone clarity. It is also worth noting that some Type III clarity gems, such as emerald, watermelon and rubellite tourmaline, or sphalerite and sphene will almost always exhibit visible inclusions even without magnification. So while it is true that higher clarity grades are more highly valued, inclusions that don't interfere with the brilliance and sparkle of a gem do not significantly affect value. Examples of Type I gems, include precious golden beryl (heliodor), imperial topaz and chrysoberyl. ![]() ![]() Type I clarity gemstones are almost always clean, even when viewed under a jeweler's loupe. ![]() In general, the cleaner the stone, the better its brilliance. Gemstones that are perfectly 'clean' with no visible inclusions are usually priced higher, although the majority of gem types are Type II clarity stones, which often exhibit some flaws. Gemstone clarity is another consideration, but not as important as color. Thus, rich cornflower blue color in sapphire is more valuable than inky blue-black or pale blue. Gems that are too light or too dark are usually less desirable than those of medium tones. Ideal colors vary by gem variety of course, but generally, the colors that are most highly regarded are intense, vivid and pure. In colored gemstones it is color that is the single most important determinant of value. While the gem variety sets a general price range for a stone, the characteristics of the specific gem also have a major effect on the price per carat. Other varieties, such as many types of quartz, are abundant in many locations around the world, and prices are much lower. Some gemstone varieties, such as sapphire, ruby, emerald, tsavorite garnet, tanzanite, spinel and alexandrite, command extremely high prices, due to their superior characteristics and rarity. ![]()
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