1. Distinguer le rubis des pierres précieuses naturelles similaires (1) Spinelle rouge. Le spinelle rouge a une couleur uniforme et est généralement incolore.; pas de dichroïsme, pas de quatre phénomènes lumineux et quatre phénomènes sombres sous une lentille polarisée; il peut contenir des cristaux octaédriques négatifs et aucune inclusion soyeuse. (2) Grenat de magnésie. Le grenat de magnésie rouge est de couleur uniforme; there […]
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L'émeraude est la variété de béryl la plus précieuse et l'une des quatre plus grandes pierres précieuses au monde.. L'émeraude a fasciné les gens de tous âges par sa verdure et son aspect agréable aux yeux.. En raison de sa rareté et de sa rareté, il a été chéri par de nombreux gouvernements et familles royales. Comme pierre de naissance en mai, […]
(1) Couleur: vert foncé, bleu-vert, et le jaune-vert sont communs. Parmi les pierres précieuses monocristallines également vertes, le vert émeraude est brillant, pur et doux. (2) Spectre d'absorption: montre le spectre typique des pierres précieuses de couleur chrome. (3) Pléochroïsme: L’intensité du pléochroïsme de l’émeraude varie avec la profondeur de la couleur. The dark emerald can […]
High-quality emeralds should be bright and pure emerald green. Variety of yellow, bleu, gris, 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. En outre, due to the production environment, emeralds are very rich in […]
Chrysoberyl is derived from the Greek vocabulary, “Chryso” means golden yellow, et “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 degrés. . (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. Bien sûr, 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, appelé “the sun’s gem” dans les temps anciens. 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, succès, 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. Jaune, brun, 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, bleu, jaune, vert, brun, rouge, et violet. According to the degree of crystallinity, zircon can be divided into three varieties: high type, medium type and low type. The refractive index, densité, and hardness value gradually increase from low type to high type. High-type zircon has a high birefringence, […]