Moonstone is regarded as a gem because of its beautiful silver and light blue halo. Halogen feldspar and Labrador stone in plagioclase series of feldspar family are also called moonstone, because they can both present beautiful halo. The English name of MOONSTONE is Moonstone, which is literally translated as Moonstone. Because it is often milky white, translucent with a light blue halo, like the hazy moonlight in Chu Qing after the rain in March, it is named Moonstone. For centuries, the soft halo of moonstone, also known as cryolite halo, is caused by the diffuse reflection interference of some small albite twins in orthoclase. Moonstone is one of people's favorite gems. It is believed that it can awaken the gentle enthusiasm of the sweetheart. Together with pearls and metamorphic rocks, it is a lucky stone born in June, symbolizing wealth and longevity.
Detailed introduction
The so-called "moonstone" is actually the "moonstone" in gemology (called "microcline" in mineralogy), and it is called moonstone because of its "moonlight effect" (a light blue or bright white halo appears in the center of the gem).
It consists of two kinds of feldspar. Among them, the mixture of cryolite and albite is the most common Good quality moonstone is translucent and has blue light like waves. The difference is semi-turbid. The lower level only has a halo and no blue light. Moonstone belongs to biaxial crystal. The refractive index of moonstone is1.518 ~1.526, and its relative density is less than 2.62. Gem ring's belt with convex arc often has some tiny cleavage. According to this, it can be distinguished from similar chalcedony, opal, glass or plastic. Moonstone will emit pink fluorescence under short-wave ultraviolet irradiation; But there is no or only weak fluorescence under long-wavelength ultraviolet light. There is blue or purple-blue fluorescence under X-ray.
It should be pointed out that there are many gems with moonlight effect in nature, but only feldspar minerals can be called moonstone, and other gems can't use moonstone names even if they have moonlight effect.
Primary moonstone occurs in special dikes and pegmatite dikes, but it is valuable in terms of placer and weathered layer. Important producing areas: Sri Lanka, India, Myanmar, Brazil, Madagascar, USA and Australia. It is also produced in China and Inner Mongolia. In addition, some people think that the ancient China jade is a kind of moonstone.
price
In fact, moonstone is not very expensive. Even the moonstone with really good quality can only be regarded as a mid-range gem (because of its huge output). Moonstone sold in general shopping malls will be very expensive. It is best to go to Xinjiekou, Xiaoying and other jewelry wholesale centers to buy (if in other places, go to the local jewelry wholesale center to buy).
Based on a 6mm*8mm torus, the wholesale price in Beijing is 15~30 yuan, while the retail price is slightly higher, about 25~45 yuan. If it is inlaid, the price ranges from 50-300 yuan (depending on the inlaid metal used).
Moonstone produced in China is no worse than that produced abroad, so the price is very cheap.
other
One of the cutest gems, which can enhance the sixth inspiration. Also called "lovers' stone", it can make two people happy.
The surface of moonstone is a bit as delicate and soft as fog glass, and its light transmission is quite strong. Due to the light reflection of the internal structure, the albite in the interlayer exudes attractive colored light, mysterious and romantic luster, full of moonlight-like aura. Indians regard moonstone as sacred stone, while ancient Greece and Rome firmly believe that moonstone is full of powerful power at full moon. It is said that making the moonstone into a ring with platinum can make it exert its maximum energy.
It is said to be effective in preventing cancer, edema and other diseases, and acts on the solar plexus corresponding to the sun gear. It hurts when the sun shade is opened, but it can make people see themselves more clearly. It can balance women's endocrine system, improve fertility and relieve physical pain, but it is good to wear it at ordinary times, not during the real physiological period.
There are many nicknames-because it can strengthen the ability to predict the future, it is called "the stone of forecasting perspective", and because it can protect foreign travelers, it is also called "the stone of travelers". Because it can attract romantic love as beautiful as moonlight, it is also called "lover's stone", and it can also let men and women discover their yin and yang sides and achieve a balance.
This answer comes from Baidu Encyclopedia.