Tanzanite, 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. It is [...]
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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." In ancient China, opal [...]
Fluorite is an important fluorine-containing mineral in nature, so it is also called "fluorite". A small number of fluorites are octahedrons and rhombic dodecahedrons, and some are twin crystals. Fluorite has glass luster, transparent to translucent, hardness is brittle and easy to break, colorless and transparent are rare, mostly blue, green, purple, and white, but [...]
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, transparent to translucent, hardness 3.5-4.5. The color of rhodochrosite [...]
The main component of cassiterite is tin oxide, which is an oxide mineral, often containing trace elements such as iron, niobium, tantalum, titanium and manganese. Cassiterite is a tetragonal crystal system. The crystals are often short columnar, slender columnar or double cone-shaped, and the conical aggregates are block, granular or kidney-shaped; with diamond luster to [...]
The main component of rutile is titanium oxide, which belongs to the oxide minerals, that is, it is a homogeneous and multi-image variant with anatase and brookite, and constitutes the rutile family. Rutile belongs to the tetragonal crystal system, the crystals are columnar, biconical or needle-shaped; they have diamond luster to semi-metallic luster, transparent to [...]
Apatite is a calcium phosphate mineral with complex chemical composition, often containing cerium, uranium, thorium and rare earth elements. According to the different additional anions, it is divided into fluorapatite, chloroapatite, hydroxyapatite and There are many varieties of strontium apatite and so on. They have a similar relationship with each other, and fluorapatite is usually [...]
Kyanite, whose English name is Kyanite, is derived from the Greek Kyanos, which means "blue". It also has another English name, Kisthene, which also comes from Greek, which means "double" and "strength". It refers to different hardness. It shows one of the biggest characteristics of kyanite, that is, the product is in different directions on [...]
Iolite, whose English name is Iolite, comes from the Greek word, meaning "violet", indicating the gem-level color characteristics. It also has several English names, one of which is Cordierite, named after the French geologist who first described the mineral in the 19th century, Pierre Louis Dental Die (PLCordier); the second, Dichroite, also from In Greek, [...]
Hemimorphite is a silicate mineral with zinc as the main component. It contains 53.7% zinc and sometimes contains a small amount of aluminum and iron. It is an important mineral of metallic zinc, and only a few colorless and transparent crystals are used as gems. Hemimorphite belongs to the orthorhombic crystal system, and the crystals [...]