The following factors should be considered when assessing the value of opal:
1. Types of opal
In general, black opal is more valuable than white opal or light opal.
2. Change color
A good opal should be a bright, opal with some transparency.
The entire opal strain is uniform and there is no colorless dead angle.
Colors that change color: The most valuable opal, the shadow appears in various colors in the visible spectrum, that is, it appears red, purple, orange, yellow, green, and blue in turn.
3. Defects
Opal's surface should not have obvious cracks.
For opal, people from different regions and countries have different styles about their color. Most Americans like red, orange opal, because it is strong and dynamic, Japanese and Koreans like blue and green opal, because this kind of opal gives a sense of calm, Chinese people always love Warm colors, so the variety of red tones is easy to push away in the country.
Gemstone Pendant Necklace:
Gem refers to the kind of after the pondering and polishing, you can meet the jewelry requirements of the stone or mineral assembly. The color of the beautiful, high hardness, in the atmosphere and the role of chemicals can not afford to change the precious ore. Can be used as instrument bearings, abrasives, decorations and so on. Also refers to the precious stones.
The gem is the most beautiful and precious stone in the rock. They are bright colors, bright colors, shiny bright, hard and durable, while rare, can be made of jewelry and other natural mineral crystals, such as diamonds, crystal, emerald, ruby, sapphire and gold emerald (stone, cat's eye) Lobster, etc .; there are a few are natural single mineral aggregates, such as ice chalcedony, opal There are also a few organic materials such as amber, pearl, coral, coal and ivory, also included in the generalized gem.Jade is also the beauty of stone. But it also has a bright color, hard and delicate texture, polished with a beautiful luster and other characteristics.
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1. Material: Gemstone
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A gemstone or gem (also called a precious or semi-precious stone, or jewel) is a piece of attractive , whichwhen cut and polished is used to make or other adornments.
Gemstone Necklace,crystal necklace, pendant necklace, fashion necklace, charms necklace
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