Die sogenannten “opal stone” in gemology refers specifically to golden emeralds with cat’s eye effect. Any other gem mineral with cat’s eye effect cannot be called “opal stone” im Allgemeinen, but must be in front of its name. It is given mineral names, wie zum Beispiel “emerald cat’s eye” oder “quartz cat’s eye”. The chemical composition […]
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Since more than 20 kinds of gem minerals with cat’s eye effect have been discovered in the world, and their beauty and value are far less than the golden-green opal, some people call golden-green opal “true opal” and refer to the other All kinds of gems with cat’s eye effect are called “false opals”. Jedoch, […]
Alexandrite, auch bekannt als “allex”, is a variety of chrysoberyl which has a discoloration effect due to the chromium content; if it has both a discoloration effect and a cat’s eye effect, es heißt “alexandrite opal”, which is very rare and extremely A precious variety, weighing 5ct, is worth more than US$5,000 per carat. […]
Tourmaline is mainly used for jewelry such as ring face and necklace; delicate colors can be carved into crafts. Tourmaline cat’s eye is mainly used as ring face. Because tourmaline has piezoelectric effect and pyroelectricity, it also has important uses in science and technology. The name of tourmaline comes from its own properties of generating […]
There are two versions of the source of the English name of Topaz: one is derived from the old name “Topas” of a small island in the Red Sea. The island does not produce topaz but is rich in peridot. The locals regard it as yellow. The variety of olivine is called “Topas”, hence the […]
Golden Jade bezieht sich auf eine Art goldener Topaz, Das meiste davon ist die gelbe Farbe von natürlich erzeugtem weißem Topaz (Auch als Topaz bekannt) Nach Wärmebehandlung. Einige Leute nennen eine Art natürliches Citrin -Goldener Jade, was als goldener Kristall richtig bezeichnet werden sollte. Brasilien produziert das weltberühmte weinfarbene Topaz; Siberian pegmatite in […]
Natural opal is a color-changing block in opal. According to the color characteristics and optical effects, there are mainly 4 Sorten: (1) Black opal: It is a gem opal that strongly changes color on a blue, black or green base. It is translucent to opaque, and changes color to deep and bright. It is the […]
Peridot is named for its unique olive green. Its chemical composition is magnesium iron silicate, which is the main component mineral of ultrabasic rocks. The orthorhombic crystal system has short or long columnar crystals, but it is often produced in granular form. Härte 6.5-7; density 3.3～4.4g/cm3; glass luster to grease luster, often transparent. Gemstones similar […]
The English name of garnet means “like a seed”, which means it is very similar to the “Samen” in pomegranate. Often referred to as “Granat” for short. The technical name of the garnet gemstone in my country is “Ziyawu”. Garnet is a big family, which can be divided into two series and six varieties. Namely: […]
Crystal is a very ancient gem. In the ancient works of “Guang Ya” and other works in China, there are many kinds of crystals such as “water jade”, “water essence”, “jade crystal”, “thousand-year ice” Und “shining stone”. The name, the aliases such as “water essence” Und “thousand-year ice” are obviously due to the lack of […]