Our country’s jewelry industry has a long history and brilliant culture. According to archaeological findings, ancient Chinese ancestors began to use gold to make jewelry in the Shang Dynasty. Byvoorbeeld, in the mid-Shang tombs of Liujiahe, Pinggu County, Beijing, two imitations of golden arm rings and one gold earring were unearthed; in Xishilou Gold […]
Skrywer Argiewe: Kingjy
According to the traditional psychology and consumption customs of different countries (ethnic groups), diamante, robyne, saffiere, smaragde, high-quality cat’s eyes, alexandriet, black opals, and extra-grade jade are usually listed as high-grade gemstones. Their prices are extremely expensive, a few per carat. The prices range from thousands to tens of thousands of dollars, and the prices […]
To determine the relative density of gemstones is to use Archimedes’ principle, and a precise balance can be used to determine the quality of gemstones and the buoyancy experienced. Byvoorbeeld, if a gemstone with unknown name has a mass of 5.2 grams in the air and 3.3 grams in water, its buoyancy is 5.2 […]
An important indicator to measure the effect of wax setting is the stability of gemstones. The gemstones after wax setting cannot show discoloration, cracking, chipping and other problems. Because in the wax setting casting process, gems must withstand the thermal shock of high-temperature roasting and high-temperature molten metal during casting, the gems must be able […]
The first situation occurs mainly because some gemstones are not suitable for wax setting casting. Gemstones with developed fissures are likely to change color after being subjected to high temperature and thermal shock. Some gems (such as amethyst, blou topaas, sitrien, ens.) are unstable in color when exposed to heat, so this type of gem […]
Inclusions are the formation of minerals, due to the different internal physical and chemical conditions, the lattice defects caused by another substance are filled, and the resulting form of a material independent of the main mineral itself. Its essential characteristics are: the physical, chemical properties and occurrence form are independent of the carrier mineral, en […]
In modern times, when science and technology are advanced, most gem names have precise meanings. Robyn (English name Ruby) is defined as a red corundum gemstone. Any other red gemstone, no matter how bright and cute it is, cannot be called “robyn”. It can only be called “Red XX Stone”. The evolution of the term […]
Nietemin, this pair of gem “sisters” is not like the “husband and wife mine” realgar and orpiment, die “twin mine” galena and sphalerite often coexist together, but often live on one side. The reason is that the two are formed in different environments: rubies are mostly produced under geological and geochemical conditions that are high […]
Volgens data van Hong Kong en Taiwan, Sjina: In die internasionale juwelierswaremark, die prys van hoëgehalte robyne wat meer as 10 sent weeg is meer as twee keer dié van die beste diamante of smaragde. Die chemiese samestelling van robyn en saffier is aluminiumoksied (KI. 0,), wat kleurloos moet wees wanneer dit suiwer is. Maar in die natuur, […]
Since the 1950s, Geboortestene (Geboortestene) have been widely popular in Western countries. Rubies are listed as birthstones in July and sapphires are birthstones in September. As gevolg hiervan, both of them have been made into high-end accessories such as men’s and women’s rings, corsages, and tie clips, and are favored by customers. Red and sapphire […]