Opal is a very beautiful gem, because it has a cat's eye effect, so it is called opal. The opal has a very high collection value. It is a kind of gem that many collectors are very sought after, but now the market is full of Many artificial opals, how to identify natural opal and artificial opal?
Natural opal will only show a bright band at the top of the curved line under natural light, but two or three bright bags with uneven brightness can be seen on the artificial opal. Observing the opal with a magnifying glass, the natural opal is a regular floc structure with good layering, and the artificial opal is a hexagonal honeycomb structure, there are many differences, and for example, the light is irradiated with honey from the right side. When the opal is on, the right side of the opal will show a honey color, and the left side will be milky white. The artificial opal has no such color reaction.
Natural opal stones are only available in yellow-green and brown colors. Under the illumination of incandescent lamps, there will be orange reflections, and there will be no red-blue color. Artificial opal stone is made of artificial glass fiber or semi-precious stones such as nephrite or kyanite, so there are many colors such as yellow, blue or green, so it is generally the opal of this color. They are all artificial opal stones.
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