Chrysoberyl is derived from the Greek vocabulary, "Chryso" means golden yellow, and "beeryl" means beryl. Before the 19th century, it had been mistaken for a kind of beryl. The golden emerald symbolizes wealth, health and longevity. The golden emerald with cat's eye effect is called cat's eye, and the golden emerald with the color changing [...]
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The differences between golden emeralds and natural similar gems are as follows: (1) Yellow sapphire. The refractive index of yellow sapphire is higher than that of gold emerald; it is more common for sapphire to appear in the three directions of hexagonal ribbon and filamentous inclusion at the angle of 120 degrees. . (2) Calcite. [...]
Among natural gemstones, there is a gemstone that is very similar to ruby, and even for a long period of time in history, people thought it was ruby, which is spinel. Of course, spinel has many colors and is not limited to red. Spinel comes in various shades of color. It is roughly divided into [...]
The word olivine comes from French Peridot. It is an ancient gemstone variety, called "the sun's gem" in ancient times. It can be used as a talisman, meaning that it can drive away evil like the sun. It is the birthstone of August, symbolizing peace, success, and bringing good luck to the wearer. The colors [...]
Red topaz has the highest color quality, the best quality is more expensive, followed by pink, blue and light yellow, and the colorless has the lowest value. Yellow, brown, and orange can be turned into pink or red by heating. This color is stable and will not change; yellow and orange can deepen the color [...]
The common colors of zircon are colorless, blue, yellow, green, brown, red, and purple. According to the degree of crystallinity, zircon can be divided into three varieties: high type, medium type and low type. The refractive index, density, and hardness value gradually increase from low type to high type. High-type zircon has a high birefringence, [...]
The color of garnet is rich, and there are various colors other than blue. Color is an important factor in determining the value of garnet. Demantoid and green series of garnets are higher in value than other colors of garnets; except for green, orange-yellow spessartine, red magnesia and dark red almandine have successively lower values. [...]
1. The basic characteristics of moonstone and sunstone Moonstone is usually colorless and white, but it can also be pink, orange, yellow, green, brown, and gray. The relative density is 2.58, the hardness is 6-7, usually no pleochroism, the refractive index is 1.518-1.526, it can have cat's eye and moonlight effect. The moonlight effect is [...]
1. crystal The crystal is colorless and transparent. The silica composition contains no impurities. The crystals are mostly produced as single columnar crystals or crystal clusters. There are many crystals weighing from a few kilograms to more than ten kilograms, and not even hundreds of kilograms or even more than a ton. Rare. However, large [...]
Qingtian stone is named after it was produced in Shankou Village, Qingtian County, Zhejiang Province. Qingtian stone is rich in color, beautiful in luster, fine in texture, moderate in hardness and strong in engraving. It is not only the best printing material, but also the most ideal craft carving stone. Qingtian stone carvings are crafted [...]