"The beauty of gems in one" opal

Opal's English is Opal, which originated from the Latin Opalus, which means "set the beauty of gems in one."

Ancient Roman naturalist Pliny once said: "On an Opal stone, you can see the flame of ruby, amethyst-like stains, emerald-like green sea, colorful, seamless, beautiful."

In Europe, Opal was known as early as the Roman Empire and was extremely valuable. According to Pliny's record, the Nunn, a veteran of the Senate, had a very beautiful Opal. He loved it very much. At that time, Anthony, the ruler, gave him up, otherwise he would exile him. As a result, Nuninen chose to go to exile and refused to give Opal to Anthony.

What motivates people to find Oupo Stone under such conditions? Why do many people think that Opal Stone is the most beautiful and attractive of all gems? The answer lies in the fact that its beauty is unique. The good Opal stone has a flame-like appearance. This appearance was found in only a few substances, but not in other precious stones. In ancient times, it attracted people's interest and made people intoxicated. This kind of flame-like phenomenon caused by the diffraction of light is called a change of color. This is the identification character of Opal Stone, and it is also the main charm of the stone.

Opal was listed as the birthstone of October in the birthstone.

Glossary 1. Opal Opal is a transliteration of English OPAL, and some people translate it into Opal, a precious opal that is mainly produced in Australia. In order to facilitate the keyword search on the Internet, we still translated it into the "opal" used in the past in Chinese. OPAL is derived from the OPALUS in Latin, which means "set beautiful stones in one." Opal is also known as: opal, flash mountain clouds and so on.

2. The original Opal is the English translation of SOLID OPAL in English, meaning the entire natural Opal after cutting and polishing, including the part that presents color and the background lining stone.

3. The color of the embryo body refers to the overall background of the original original Opal. The English name is BODY TONE.

4, the color of the game Opal surface color with light intensity and visual angle conversion to produce a variety of changes, like a variety of colors playing hide and seek together. English is called PLAY-OF-COLOUR. It is a phrase created specifically to describe the changing colors of the Opal.

2.Plaisius Opal is a transliteration of English PRECIOUS Opal, meaning precious or valuable Opal.

6, Debole Opal is the English transliteration of DOUBLETS Opal, Chinese is the meaning of double-layer Opal 7, Treble Opal is the mezzanine Opal is the English transliteration of TRIPLET Opal, Chinese is a three-tier opal the meaning of.

8. The background lining stone usually refers to the background part of the original opal, Debolai Opal, and Tsui Bolai Opal used to set off the surface color opal, and is a natural ordinary Opal composition.

What is Opal Opal is one of the most beautiful and precious gems in the world, and 95% of the world's opal is produced in Australia. The chemical composition of Opal is SiO2·nH2O (a mixture of silicon molecules and water). According to the display of the color of Opal body, it can be divided into colorless, white, light gray, dark grey and black. Unlike other gems, Opal's fascinating colors are based on a random "color-changing game" that presents various colors in the spectrum.

Opal is a gel-like or liquid silica that remains in the fractures and caves of the formation and solidifies into amorphous amorphous gemstones, which also contain animal and plant residues such as trees, carapace and bones. The moisture content in high-grade 5 opals can reach up to 10%. Opal generally has a refractive index range of 1.38 to 1.60 and a Mohs hardness range of 5.5 to 6.5.

During the formation of the opal, the silica solution is like magma flowing into the crevices of the inland formation and the deposition of the empty ore zone. Sedimentation takes place at a depth of about forty meters from the surface, and the sediment will increase by one centimeter in thickness about every five million years. During the one or two million years after this stage, sediments began to slowly solidify with climate change. Opal is a part that has not been cemented to other deposits and has been hard for a long time.

We usually divide natural opals into two categories: "Plaisius Opal" and "Ordinary Opal". The Bright Colors of Prytheus Opal are full of color-changing games that are rare and precious. The dullness of color and the inability to present a color-changing game are known as ordinary Opal, and ordinary Opal has been found and produced in small quantities around the world.

Ninety-five per cent of opals mined in the Opal mine are ordinary opals, usually only white, gray or black. They are only suitable for the background stones of De Bole Opal and Treble Opal. The remaining 5% are opal, but 95% of them are just ordinary grades. In other words, only about 0.25% of the extracted volume can be called truly valuable Opal.

Paceius Opal is defined as a silica opal that will change the game. The term "color-changing game" is specifically used to describe the precious and opulent Opal's changing colors. Opal produced in Australia is sometimes referred to as "sedimentary gem" because it is mainly formed and produced in sedimentary rocks in the Mesozoic large artesian well basin. Placius Opal typically contains 6-10% moisture, and the small silicon particles it contains are arranged in a regular pattern. Its Mohs hardness is generally between 5.5-6.5, and the specific gravity is mainly between 1.9-2.3 depending on the moisture content.

During the condensation of silica, the moisture gradually decreases, the gel forms a sphere, and the sphere naturally adheres to small particles of silica, which have a size of 1500 to 3500 angstroms (1 angstrom equals one hundred millionth of a centimeter). Although these pellets are small, they are filled with Opal's interior and are arranged in a regular pattern. Because they are round spheres, there is a small space in the structure (as if a lot of marble balls were placed in the container and appear in the gap between them), and these gaps are arranged in three dimensions. The color of Opal is precisely due to the fact that these regularly arranged voids are generated by the decomposition of white light by optical diffraction. When the silicon particles are relatively large, the voids will be relatively large, and the red or orange diffracted light will appear. If the silicon particles are smaller, the gap will be smaller and the blue-violet spectrum will be resolved by diffraction. The color is too much like the rainbow changes. The strongest effect of light diffraction is the largest gap size. Therefore, the opal surface with red color is often bright, while the blue color is relatively dim.

In short, the color change of Pleasius Opal comes from the regular array of silicon particles and the diffraction of white light between the gaps. The diameter of the silicon particle determines the distribution of the color of Opal. Small silicon particles will cause Opal to produce the usual blue-purple, and vice versa will produce precious red. Each opal has a different value according to its own quality. The main decisive factors are: body color tone, color-changing game, color, brightness, pattern, size and shape.

The classification of Opal 2, Natural Opal Natural Opal is a whole piece of direct mining, without artificial treatment of natural stone. What we call the original Opal is the whole natural Opal that can be appreciated after being cut, polished and polished on the basis of natural Opal. The original Opal points are as follows:

1. The black opal is brightly colored in the shades of dark embryos. We call it Black Opal. Black Opal is produced in Leidenring, New South Wales, Australia and is the most famous and expensive opal species. Black Opal does not mean that it is completely black, but it is darker than the opal with a lighter shade of embryo.

3. Some people in the white opal called it "milk opal". The white opal presents light-coloured embryos and is mainly produced in Coober Pedy, South Australia, Australia. White opal Because of its lighter shade, the output is large and relatively common. White opals do not appear as contrasting, bright colors like black opals. However, high-quality white opals with beautiful colors have also been discovered.

4. Shuo Shi Opal Shuo Shi Opal is an opal that can display colors and is attached to inseparable iron ore. It is mainly produced in Queensland, Australia. This kind of opal can only be cut together with iron ore. The thin coloured opal is wrapped around the surface of the iron ore. Due to the contrast of dark iron ore, the color of opal looks very beautiful. Sparkling stone Opal has different shapes and sizes, small as peas, and large can have the head of a family car. Sometimes the whole piece of polished stone Opal has a natural rift in the joint to divide it in half. There are two Opal surfaces that look like polished. Oral thin surface layers are also often destroyed during ore cutting.

5, Crystal Opal Crystal Opal can be any of the above mentioned, but its embryo body tone is transparent or translucent. You can even see the other objects behind the crystal Opal. Crystal Opal can have dark and light-colored embryo body shades, so we call them “Crystal Black Opal” or “Crystal White Opal” based on the shades of the embryos.

6, the cornerstone Opal filled in the gap between the iron-like or iron ore-like gaps in the mesh of the whole block of opal. Usually they have good fire colors. Adamakka base opal can be made to have a dark background and even a more beautiful color of the whole basement opal by soaking the sample in sugar water and then boiling it in acid water to produce carbon deposits.