Purity reflects the number of anomalies in the stone, which we also call inclusions. Inclusions can be traces of other elements in the stone or structural irregularities.
Sometimes they are visible as minor anomalies in the stone, such as small garbage or mist. The number of anomalies, their size, color, and position determine the purity of the stone. This is typically estimated to be below 10x magnification.
As a rule, minor irregularities do not affect the mechanical properties of the diamond. Pure diamonds are very rare, but somewhere only 20% of all diamonds are suitable for use in jewelry.
Most often we know the diamond of white or transparent color. However, diamonds in nature appear in different colors, and the color of the diamond can also be changed artificially.
The highest quality diamonds are without color and have a D mark. Quality E and F represent stones in which it is virtually impossible to detect color. G and H represent a quality where very mild shades of yellow can be detected. I, J and K represent a lower coloration. Lower quality is rarely used in jewelry, especially if several stones are combined together, where the resulting coloring of individual stones is more visible.
More colored stones are typically cheaper, with the exception of heavily colored stones, which regain their color at their value.
In nature, there are also distinctly colored diamonds, most often yellow and brown, less rarely pink, green, blue and other colors. The price of colored or foreign fancy diamonds is very different, depending on rarity and demand, may be lower or higher than white diamonds. Find more at 網上鑽石.
If you want natural stones, but diamonds are too expensive for you, the right choice is white topaz. Very nice stones, a little more expensive than zircons. Similarly wear-sensitive.
If you want some color and think about colored stones, the choice is similar to that of white stones. Colored zircons, colored diamonds, colored topaz, sapphires… Price-like with white stones, only availability and choice depend more on the current supply on the market.