defect? Why are the cut shapes of the same gemstones different? What is the corresponding relationship between gem quality evaluation and price? and many more. This requires salespersons to answer well. Only in this way can they play a better role in publicity and promotion. Because many precious natural gems, such as diamonds, robyne, saffiere, […]
Kategorie -argiewe: Juwele nuus
There is a certain relationship between the caliber (inner diameter) of a jade bracelet and the thickness of the diameter. That is, when the jade bracelet is smaller, its diameter is also thinner; when the mouth of the jade bracelet is large, its diameter is correspondingly larger. Only in this way, a harmonious beauty will […]
(1) Intuitive method: the method of direct observation with naked eyes. This is also the most common and actual identification method. The inspection can be carried out from the following four aspects: ①In terms of color, vorm, grootte, gloss, ens. If it is a bead or a batch of pearls, for real pearls, they are […]
Diamonds are noble and luxurious ornaments, and jewelry with natural diamonds is the crown of jewelry. Nietemin, diamonds are scarce and expensive, especially the larger ones, and most people don’t dare to care about them. As gevolg hiervan, the use of cheap gemstones, man-made gemstones and even glass to replace or pretend to be diamonds […]
(6) Artificial rutile: Rutile is an ordinary natural mineral, and its composition is titanium dioxide. Because its refractive index (2.61～2.90) is higher than diamond (2.42), it is polished into a gem. Bright and dazzling flashes and rainbow-like changes can appear afterwards, which is very beautiful. It is a pity that almost all natural rutile is […]
Regarding the magnification of a magnifying glass for jewelry, some people think that the bigger the better, in fact it is not, because in terms of lens production, it exceeds 10 times and can guarantee its optical quality and clear aperture (the clear aperture of the magnifying glass is 16-20mm) Appropriate) is very difficult; secondly, […]
Nog belangriker nog: Sit kunsmatige rooi en saffier op wit papier of in die water in 'n wit houer. Die kleurbande of groeienreine is meestal geboë en geboë, terwyl die seskantige groeiene van natuurlike produkte effens geboë is. Die lint is reguit. Ook, the fluorescence of artificial rubies is stronger […]
But their chemical composition and physical properties are very different. Byvoorbeeld, emerald has a hardness of 7.5-8, while fluorite has a hardness of 4; emeralds have a density of about 2.7g/cm3, while fluorite (3.18g) /cm3), toermalyn (3.05g/cm3) and emerald (3.33g/cm3) have higher densities. In the indoor test with tribromomethane, only emeralds floated up, en […]
Natural emeralds can be divided into two types: (1) American type: includes emeralds produced in Colombia, Brazil and the United States. It is characterized by low refractive index, small specific gravity, ultraviolet (long wave) irradiation and fluorescence, and the color turns red when observed with Charles filter. (2) African type: emeralds produced in Zimbabwe, South […]
(1) Regarding the choice of type and size. Oor die algemeen gesproke, the chicken heart, hanging gall and Guanyin are suitable for women to wear; Maitreya Buddha is suitable for men to wear, but there are exceptions. Byvoorbeeld, men like the big chicken heart, the hanging gall and the big Guanyin, and it is not enough […]