Opal is still very new compared to those known gems. Even though the Australian had known about opal for over a thousand years, It didn’t become popular until they found the high quality opal in Australia. Many jewelers are not familiar with opal, they don’t sell the opal, so It is hard for the people to see the beauty of opal. Our countrymen know very little about opal. No matter whether you are a rich man or an ordinary one struggling for life, opal will be the stone belonging to you. One of opal’s charming features is that they can always be cut into the styles that are affordable. No matter the opal you buy is expensive or cheap, you can declare that the opal is natural but man-made. The assessment of the price is very hard for the opal. To assess the opal needs a lot of experience, it is still very hard for an experienced man to deal with the questions from different market demands. In a word, it is decided by the buyer with how much to buy the things he needs. Of course, there are some basic or acknowledged standards as references, such as the performance of color, the perfection of cutting and polishing, the size of stone and so on.
The color spread all over the stone, having no gray and colorless patch; The design on the stone is charming and flexible; The change of color is intense and vivid. The color should be bright thoroughly as much as possible. The color should not only remain on the surface, but also can attract our attention to the inside of the stone through the surface, discovering more mysteries. The color of the stone should be as rich as the rainbow, the color can all be shown on the spectrum, especially the red and purple, it is very rare after all.
Best quality opal should be no crack, the background is black dark, the blacker, the better, the color is rich and bright. The gems with red will double the price, but best quality gem can be with any color. The opal with colorful pattern is very rare, which is the state-of-the-art.
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