Garnet [1], also known as garnet. As the general name of a mineral group, its English garnet comes from the Latin Granatum, which means "granular, like a seed". According to English transliteration, a few people in China call it "Ganeshi". The Chinese name garnet vividly describes the appearance characteristics of this mineral, which is like the "seed" in pomegranate from shape to color. According to legend, the pomegranate tree came from the country of interest, and it was called "pomegranate of interest" in history, which was transliterated as "pomegranate" for short. In the jewelry industry in China, the technological name of garnet is "Ziyawu". "Wu Ya" comes from Yakut (a kind of gem) in Arabic. Because garnet is often purplish red, it is named Ziyawu. For thousands of years, garnet has been regarded as a symbol of faith, loyalty and simplicity. People are willing to own, wear and worship it, not only because of its aesthetic and decorative value, but more importantly, people believe that gems have incredible magical power, which can turn misfortune into luck, keep their honor status forever and have important commemorative functions. Today, as the birthstone of June+10 in 5438, garnet symbolizes loyalty, friendship and chastity. Stone natural garnet hand row
[2] The difference between garnet and similar gemstones and synthetic garnet. Ruby, sapphire, artificial corundum, topaz, emerald, jadeite, etc., which are similar in color to various garnets, are all anisotropic and can be distinguished by a polarizer. It can be distinguished from density, inclusion, refractive index, dispersion and fluorescence. The difference between garnet and synthetic green garnet mainly lies in internal inclusions and density. The synthesized green gadolinium gallium garnet and yttrium aluminum garnet are uniform in color, flawless, with occasional bubbles, and appear red under the color filter. Density: Gd-Ga garnet 7.05g/cm3, Yttrium-Ga garnet 4.58g/cm3, far higher than natural garnet. In addition, refractive index and dispersion also have their own characteristics and can be distinguished. Evaluation and purchase of garnet. The evaluation and purchase of garnet are based on color, transparency and particle size. The standard requirements of gem-grade garnet are: good transparency, bright color and particle size greater than 5 mm. Emerald garnet is very popular in the international gem market. It is pure and flawless, bright in color and crystal clear. Emerald Cr-V-Al garnet (also known as shaftesite) has high value and high quality comparable to emerald. Red and orange-red garnets are also very precious, and the price of orange garnet (also called manganese aluminum garnet) has risen rapidly in recent years. Garnet is one of high-grade gemstones, among which green gemstones are rare. The variety with rich and pure colors and high transparency is the best of Ziyawu. With high refractive index, strong luster and beautiful colors, it is a favorite gemstone variety. Many countries in the world regard Ziyawu as "the birthstone of January", which symbolizes loyalty, friendship and chastity. Westerners believe that purple tooth black has the magical effect of treating diseases and saving lives; In the Middle East, Ziyawu was chosen as a royal pledge.
Prehnite is a silicate mineral. Usually, they appear in caves of igneous rocks, and sometimes they can be seen on stalactites. The color of prehnite varies from light green to gray, with white, yellow and red tones, but green is common. Transparent and translucent. Their shapes are plate-shaped, sheet-shaped, grape-shaped, kidney-shaped, radial or block-shaped aggregates. Prehnite with good quality can be used as a gem, which is called the emerald of the Cape of Good Hope.