Is the opal's value bubble more?
Bored, lying on the sofa watching TV, the big Mimi at home came quietly to me, snuggling beside me. Yes, Big Mimi is my baby cat. When I see it picking up its eyes, it reminds me of a gem, or a very expensive gem. Yes, it is an opal.
origin
Strictly speaking, "cat's eye" is not the name of a gem, but an optical phenomenon on certain gemstones. That is, when a gemstone that has been ground into a hemispherical shape is illuminated with strong light, a thin and bright reflection will appear on the surface, which is called "cat's eye flash" or "cat's eye light", and then it is named according to what the gem is. If the gem is quartz, it is called "Quartz Cat Eye", if it is a gold emerald, it is called "Golden Green Cat Eye."
There are many kinds of gemstones with cat's eye flash. According to statistics, there may be as many as 30 kinds. In addition to quartz cat's eye and gold-green cat's eye, there are also "Gemstone Cat's Eye" and "Aquamarine Cat's Eye". Because the golden green cat's eye is the most famous and most precious, it is also referred to as "cat's eye" in the habit. Other cat eyes cannot be called.
There are many gemstones with cat eye effects. The gemological world refers to the gold emerald with cat's eye effect as the opal. The opal stone is generally referred to as the golden green cat's eye gemstone, while other gemstones with cat's eye effect must be preceded by the word "cat's eye". Names such as aquamarine cat eyes, tourmaline cat eyes, etc.
Place of origin
The world can produce opal, but it is not too small. Sri Lanka, Russia's Ural region, Brazil, Myanmar, India, Australia, Zimbabwe and other places have output.
But the highest quality, most prestigious opal is only available in the Tranabra and Gower regions of southwestern Sri Lanka! The mining area here has a history of more than 2,000 years of mining.
As the five precious stones of the same name as diamonds, rubies, sapphires and emeralds, the appearance of opal is relatively small, because the output is really rare! Globally, the production of gold emeralds is much smaller than other precious stones, and there are fewer cat-eye effects, not to mention the super-high quality. The opal that weighs more than 10 carats has already been used. Become a treasure in the major auction venues.
Not only is the mineral resources scarce, but in Sri Lanka, the main producing area of ​​gold emeralds, private small workshops with low yields have always been the most important mining method, which makes the production of opal more limited.
value
The price of opal is different, which is directly related to many factors. First look at the color of the cat's eye. The color of the cat's eye is mainly yellow, the highest value is dense yellow, yellow green and brown green are also very expensive, pay attention to the color of the opal when selecting.
Under the spotlight, the opal will show different colors from different angles, especially the cat's eyeliner. Under the two spotlights, when you turn back and forth, it will open for a while and close. The value of the opal is judged by observing whether the cat's eye line is straight, uniform, continuous, and clear.
The last factor that affects the price of opal is weight. The same quality of the opal, the greater the weight, the higher the natural price. At present, from the perspective of the jewelry and jade market, the opal with relatively large weight is relatively rare, and the price is also high.
effect
1. Promote blood circulation, help people enhance their memory, and help people relieve fatigue;
2, promote cell metabolism, activate cells, thereby accelerating the body's metabolism, excreting harmful substances in the cells, balancing endocrine disorders;
3, promote inflammation subsided, eliminate swelling and pain, improve gastritis, enteritis, nephritis, arthritis, shoulder and cervical spondylitis, lumbar muscle strain symptoms, great help for middle-aged and elderly;
4, can also adjust blood pressure in both directions, people with high blood pressure can reduce blood pressure;
5. Improve the oxygen carrying function of red blood cells and reduce blood viscosity;
6. Enhance and improve the body's immune function, improve the body's resistance to disease, and have curative effects on various senile diseases such as heart disease and coronary heart disease;
7, improve blood lipid metabolism, have a cholesterol-lowering effect. Can improve the symptoms of diabetes.
Identification
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, artificial opal is made of glass fiber, there are red, blue and brown, of which 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;
3. Illuminate from the side of the opal with a single light source. The colors on both sides of the opal are different. When you look at the yellow opal from the left side, the left side is honey yellow, the right side is milky white, and when it is illuminated from the right side, its color is just the opposite.
maintenance
1. Thorough cleaning method: use a small bowl or tea cup to hold the warm water after the salt is dissolved, soak it for 10 hours each time 10 grams. Finally, dry it with a soft, lint-free cloth. Salt cleaning has a large impact on the artificially treated gemstones, which can cause the manual processing to appear. But it does not affect the natural part. Moreover, cleaning the diamond ring with salt every month can eliminate the dead skin on the ring and pendant to avoid fungal growth;
2, cold water immersion method: use a small bowl or teacup, put the salt into the bowl, dipped the diamond in the water for about 30 minutes, then use a small brush, gently brush before and after the diamond, then wave in the water for a while, take Come out and wipe dry with a paper towel;
3, rapid cleaning method: buy a little salt, bury the diamond ring to purify, wash the diamond. It takes 24 hours to bury each time. This has the disadvantage that if the gemstone is artificially treated, the artificial part will appear. Therefore, if it is a hand-treated gemstone, you cannot use salt;
4, defensive salt immersion method: the use of defensive salt is the most standard method of degaussing, it is not extracted from the sea, is a neutral cleaning agent, will not have any corrosive effect on the opal, so you can use it with confidence. First, put it in a container according to the ratio of 10 grams of defensive salt and 500 ml of water, and then put the opal into the container and soak for 24 hours. Remind that soaking time can be longer than 24 hours, but not shorter than 24 hours.
For the investment value of opal, among the world's top five gems, the golden green opal is known for its scarcity, but because of its scarcity, it always has its own unique advantages in terms of price and appreciation space. In fact, the supply of high-quality gold-green opal has become less and less. In the current auctions of major auction houses around the world, the shadow of giant golden-green cat-eye gemstones above 50 carats has rarely been seen.
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