The color of a gemstone is one of the most important factors in determining its value. The more vivid and intense the color, the more value it has. Less intense or weaker colors, or very dark gemstones which block color or brightness, are usually priced lower.
The cut of a colored gemstone is as important as its color. When a gemstone is well cut it becomes alive. A well-cut gemstone can be easily recognized just by looking at it. It will exhibit a strong "play of light" and it will reflect maximum brilliance back to the eye.
In colored gemstones, inclusions, or birthmarks as they are often called, usually vary to the type of gemstone. There are some gemstones that have almost no inclusions. amethyst, aquamarine, topaz and tanzanite can be pointed out as those. Rubies, sapphires and tourmalines usually have some inclusions while emerald is often more heavily included. While a characteristic inclusion in a colored gemstone is not only a positive factor in identifying it as a natural gemstone, it can also be a contributing factor to good color in a gemstone. Some inclusions may also interfere with the overall beauty and strength of a gemstone, making it undesirable to buy.
In the gem and jewelry trade it is standard procedure that natural colored gemstones be subjected to some form of beauty enhancement. These enhancements are stable and possibly undetectable. They are universally accepted practices that will prevail as long as gemstones are mined.
4 Cs of Diamonds | Colored Gemstones