Because the name of emerald green is too complicated and numerous, the jewellery trade circles often use the 10 words “dense, yang, pretty, righteous, harmonious, light, yin, old, evil, flower” to evaluate it, which can be called “cross formula” . “Dense” refers to the color dark green without black. On the contrary, it is “light”, […]
Arsip Kategori: Berita perhiasan
Aquamarine refers to the beautiful azure blue to sea blue emerald variant, and it can also be called sky sapphire and water sapphire. The gem industry in my country also calls it “blue crystal”. It is considered to symbolize “composite, brave”, “happy and longevity”, and is designated as the birthstone in March. Because aquamarine has […]
The so-called “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” umumnya, but must be in front of its name. It is given mineral names, seperti “emerald cat’s eye” atau “quartz cat’s eye”. The chemical composition […]
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”. Namun, […]
Alexandrite, also known as “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, it is called “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 “Batu 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 “topaz”, hence the […]
Golden jade refers to a kind of golden topaz, most of which is the yellow color of naturally produced white topaz (juga dikenal sebagai topas) after heat treatment. Some people call a kind of natural citrine golden jade, which should be called golden crystal correctly. Brazil produces the world-famous premium wine-colored 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 varieties: (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. Hardness 6.5-7; density 3.3～4.4g/cm3; glass luster to grease luster, often transparent. Gemstones similar […]