When buying the opal bracelet, we need to know the identification points of the opal bracelet.
The method for identifying the true and false of the opal is as follows:
1. The main recognition feature of opal is the clear brown-yellow cat's eye. The filamentous inclusions of the opal are rutile, and some are empty tubes. Because these tubular bodies are slender and dense, the cat's eye effect is particularly noticeable, and is also very clear under weaker sources. This is unmatched by other gems.
2. A single light source is used to illuminate the side of the opal, and the colors on both sides of the opal are different. When the yellow opal is photographed from the left side, the left side is honey yellow, and the side is milky white. When it is illuminated from the right side, the color is just the opposite.
3. Artificial opal is made of fiberglass, red, blue and brown, and the brown-yellow variety is somewhat like natural opal. The difference between the two is that the artificial opal has 2-3 bright bands at the top of the curved shape, and only one natural opal; the sides of the artificial opal are observed with a magnifying glass, and the hexagonal honeycomb structure can be seen; Stone has a lower hardness than natural opal.
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