25+ The most beautiful gem - Opal
Opal, an opal in mineralogy. The fascinating color of Opal Gems is like a colorful dream, giving people a magical reverie. People regard Opal as the birthstone of October, which is the stone of hope and happiness.
The word Opal comes from the Sanskrit word "Bawang thorn", which means gems. In Europe, Opal is considered a lucky representative. The ancient Romans called it "the cupid beauty boy", a symbol of hope and purity.
The Japanese also love Opal Gems, but some Western Europeans do not like it. They think that Opal's fickle colors are not good.
As early as the Roman Empire, the value of Opal has already been reflected. It is said that a high-ranking official inadvertently learned that a servant in the family had a very beautiful opal. He had never forgotten after reading it, so he proposed to use a house to exchange with the servant. The servant refused to agree, and the result provoked the official to be furious and almost killed the "dead brains" servant...
The writer compares Opal to volcanoes, galaxies and fireworks. Appreciators have given some poetic names to this extraordinary opal, such as Pandora, the Light of the World, and the Empress.
In ancient Rome, this gem symbolized love and hope. The Romans gave it a name - opalus - a synonym for "gems".
In the year 75 AD, the Roman scholar Pliny pointed out that “some opal will present a lottery, and its color can be compared with the artist’s deepest and richest colors. And some...like the flame of sulfur burning, even like The bright flame of oil burning."
He was amazed that this kaleidoscope-like gemstone has both ruby red, emerald green, topaz yellow, sapphire blue, and amethyst purple.
In many cultures, Opal's origins are extraordinary and supernatural. The Bedouin believes that Opal contains lightning and will fall from the sky during a thunderstorm.
The ancient Greeks believed that Opal gave its masters the ability to predict and defend against disease. Europeans have always believed that Opal is a symbol of hope, purity and truth.
Opal is the birthstone of October. Some people think that it is unlucky for a person who is not born in October to wear opal. But this superstition is a novel from the 19th century (Anne of Geierstein, Author: Sir Walter Scott), and not from any old belief or the voice of experience.
In fact, in most of human history, Opal has been regarded as the luckiest and most amazing gem because it can display all colors. Once, people thought it had the ability to continue life and maintain blonde color.
The chemical composition of Opal is: SiO2·nH2O (a mixture of silicon molecules and water). According to the display of the Opal embryo body color, it can be divided into colorless, white, light gray, dark gray and black. Unlike other gems, Opal's fascinating color is based on a random “color-changing game” that presents the various colors in the spectrum.
First of all, the opal that can be called the precious stone, only the Australian-made opal, and the more special Mexican-made fire opal. Other regions, including the Opal, which is now more popular in Africa, are not yet known as precious stones in the world and can only be called aqueous opals. This is the water opal we often say.
Australia's Opal, also known as the precious stone of the world's most beautiful stone for a long time. 95% of the world's opals are produced in Australia.
1, the type is more comprehensive, black opal, white opal, crystal opal, of which black opal is the most expensive;
2. The water content is very stable;
3. Relatively thin.
The fiery coloration created the Mexican Opal, or Fire Opal, because they are also well known and stand out.
These red-orange gemstones have their own color from the fine traces of iron oxide, and many people think that their warm light adds courage and vitality.
Many Mexican fire opels have no color change effect, which is the result of frequent volcanic activity.
Fire opal refers to orange-orange, orange-red to red body color, transparent to translucent opal. Its unique "flame-like" body color is caused by the fine dispersion of red or yellow iron oxide or iron hydroxide particles. It is most famous for its fire opal produced in Mexico, so it is also called "Mexican Fire Opal".
Fire Opal is mainly produced in siliceous lava lava caves. The terminology is called “volcano” opal, so it is orange, orange red, red, and the bright red is the most expensive in fire opal.
Australia Opal is mainly produced from sedimentary deposits, commonly referred to as "deposited" opal.
The water opal produced by Ethiopia, which is now more popular in Africa, cannot be called a precious gem in the world. It can only be called water-containing opal, which is what we often call water opal. In the gem world, water opal can't even be called opal because they are just water-containing opals.
Water opal is not suitable for high-end jewelry, such as pendants, ring faces, etc., not suitable for slicing. Because water opal is different from black opal, these two are different opals.
Because water opal is different from black opal in the shape of crystal. If the water opal is cut into thin slices, the fire will fade. And it is easy to lose water and lose the fire color, and then recover after soaking in water, but it is easy to break after losing water many times. Short for half a month, it will be broken in three or two years.
Water opal can not be called the reason of precious stones, because they are unstable, high in water, easy to dehydrate and white, and will break after repeated water soaking.