- Clarity is an important factor in comparing quality colored gemstones. Even opaque opals can have milky inclusions that will affect their iridescence and color play. In general, the best values are available in gemstones that are moderately included. Exceptional gemstones with few or no inclusions are available, but they can command extravagant prices.
The beautiful color of a gemstone is its most defining characteristic, and many jewelers consider it to be the most important evaluation criterion.
The most valuable gemstones are those that exhibit a pure color and only "slight" hues of other colors in addition to their primary color
Tone represents the depth of color, ranging from colorless to black. Gemstone tone is described as "light," "medium-light,""medium," "medium-dark," and "dark."
Saturation, or color purity, refers to the degree to which the gem is free from brown or gray hues. The most desirable gemstones, which show little gray or brown, are often described as having "vivid" or "strong" color saturation. Generally, the levels of color saturation will not be called out in the product details because generally the gemstones in our jewelry are hand-selected for their vivid colors
- Look at the gemstone in the setting and ensure that all the facets are symmetrical. An asymmetrically-cut crown indicates a gemstone of low-quality. In all cases, a well-cut gemstone is symmetrical and reflects light evenly across the surface, and the polish is smooth, without any nicks or scratches.