Opal is one of the more popular gems. Its mineral name is opal, and the English name is “Opala”, which means opal in transliteration. As the birthday stone in October, it is widely circulated among the people. It symbolizes happiness and peace. Its moving part lies in its gorgeous color. Opal’s “fire” is composed of numerous large and small spots that emit colorful light. High-quality opal can combine a variety of colors, which is its charm.
Opals come in various colors. Color-changing opal is called white opal and is the most common type of opal. Black, gray-black, dark blue, brown or other dark colors of opals are called black opals. Orange, orange, and red opals are called fire opals.
The value of opal depends on the size, color and color change effect of the gem.
A high-quality opal should have a bright surface without cracks, a certain degree of transparency, uniform color change, no dead ends, and show various colors in the visible spectrum. De um modo geral, the background color and color film have strong contrast brightness and beautiful color, especially the ones with more red and purple components, compact and non-destructive. Entre eles, black opal is rare in nature, the most precious and the most valuable.
Australia is the country with the most opal production in the world, accounting for more than 90% of the world’s total production.
Others such as Mexico, Brasil, the United States, Honduras, Madagáscar, New Zealand also produce opals.
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