1. Distinguishing ruby and natural similar gems (1) Red spinel. The red spinel has uniform color and is generally colorless; no dichroism, no four bright and four dark phenomena under a polarized lens; it can contain octahedral negative crystals and no silky inclusions. (2) Magnesia garnet. The red magnesia garnet is uniform in color; there […]
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Emerald is the most precious variety of beryl gemstones and one of the four largest gemstones in the world. Emerald has fascinated people of all ages with its verdure and pleasing to the eyes. Because of its rarity and rarity, it has been cherished by many governments and royal families. As the birthstone in May, […]
(1) Color: dark green, blue-green, and yellow-green are common. Among the single crystal gemstones that are also green, the green of emerald is bright, pure and soft. (2) Absorption spectrum: shows the typical spectrum of chromium-colored gemstones. (3) Pleochroism: The intensity of emerald’s pleochroism varies with the depth of the color. The dark emerald can […]
High-quality emeralds should be bright and pure emerald green. Variety of yellow, blue, gray, brown and other variegated tones will reduce the color quality of emeralds; grandmothers with uniform color, uneven color or lighter color are required Green, its price is also lower. In addition, due to the production environment, emeralds are very rich in […]
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 […]
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, […]