Olivine is a magnesium iron silicate mineral and belongs to the orthorhombic crystal system. The crystals are short columnar. Complete crystals are rare. Most of them are irregular round granular aggregates. They have glass luster, průhledné až průsvitné, a tvrdost 6.5-7.0. Olivine is a kind of self-colored gemstone, which is green due to iron […]
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Topaz is a kind of magnesium aluminate mineral and belongs to the orthorhombic crystal system. Most of the crystals are in the shape of orthorhombic columns. There are also granular and massive aggregates with glass luster, transparency and a hardness of 8. Topaz is rich in color, with yellowish brown being the most common, červený […]
The first series is Almandine, including Almandine, Spessartine and Spessartine. The English name of Almandine is Almandine, which comes from Latin, význam “charcoal powder”. Because of its high content of iron, it is mostly brownish red or brownish-black-red. It can emit a dark red like a fire when charcoal is burning, and some translucent ones […]
Crystal is a colorless and transparent quartz crystal mineral. Patří do trigonálního krystalového systému. The crystal is usually a cone composed of a hexagonal double cone and a hexagonal column. It is also common to appear transparent in irregular or beautiful crystal clusters, se skleněným leskem, a tvrdost 7. The main […]
Jadeite is a commercial name. Ve skutečnosti, it is a kind of rock composed mainly of jadeite. The main component of jadeite is sodium aluminosilicate, which belongs to the monoclinic crystal system. Single crystals are rare, usually granular or fibrous microcrystalline compact aggregates, with glass luster to grease luster, transparent to opaque, a tvrdost […]
Feldspar is an aluminosilicate mineral with potassium, sodium and calcium as the main chemical components. Feldspar has glass luster and pearl luster, průhledné až průsvitné, usually colorless, bílý, light brown, green and blue Green is very rare in the feldspar family that can achieve good gem quality. Only feldspars with transparent crystals, bright colors and […]
Tanzanit, the English name Tanzanite, is derived from place names. It is a kind of vanadium-containing zoisite (V-Zoisite). Because it was discovered in Tanzania, Africa in 1967, the international gemstone community named it “Tanzania Stone”, or tanzanite for short. Tanzanite is calcium aluminosilicate and belongs to the epidote group of minerals in mineralogy. To je […]
Opal is a gemstone with a color-changing effect. Pliny, a famous natural scientist in ancient Rome, once described it as follows: “On an opal stone, you can see the flame of ruby, the color spots like amethyst, and the emerald sea. Green, the five colors are colorful, blending together, and beautiful.” Ve starověké Číně, opál […]
Fluorite is an important fluorine-containing mineral in nature, tak se také říká “fluorit”. A small number of fluorites are octahedrons and rhombic dodecahedrons, and some are twin crystals. Fluorite has glass luster, průhledné až průsvitné, hardness is brittle and easy to break, colorless and transparent are rare, mostly blue, zelený, fialová, a bílá, ale […]
Rhodochrosite is a kind of manganese carbonate mineral and belongs to the trigonal crystal system. The crystals are rhombohedrons and are often produced as aggregates. They are granular blocks, milky, stalactites, nodules, and nodules with concentric layered patterns inside. It has glass luster to pearl luster, průhledné až průsvitné, tvrdost 3.5-4.5. The color of rhodochrosite […]