What Is Yellow Gold? A mixture of silver, χαλκός, καθαρός χρυσός (and a trace of zinc) gives yellow gold jewelry its rich shine. Although the percentages of each metal used to create the alloy vary, all formulas starts with 75% pure gold for 18k gold and 58.3% for 14k gold. The result gives off a […]
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Gold Purity As the most malleable of all precious metals, gold is an excellent choice when crafting designs with very intricate details. Συν, it’s resistant to rust, tarnish and corrosion. Pure gold is too soft for everyday wear, so it’s alloyed with a mixture of silver, copper and a trace of zinc, to give it […]
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, όπως διαμάντια, ρουμπίνια, ζαφείρια, […]
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, σχήμα, μέγεθος, gloss, και τα λοιπά. 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. Ωστόσο, diamonds are scarce and expensive, especially the larger ones, and most people don’t dare to care about them. As a result, 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, […]
Πιο σημαντικό: Put artificial red and sapphire on white paper or in the water in a white container to observe. The color bands or growth lines are mostly curved and curved, while the hexagonal growth lines of natural products are slightly curved. The ribbon is straight. Εξάλλου, the fluorescence of artificial rubies is stronger […]
But their chemical composition and physical properties are very different. Για παράδειγμα, 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 (3.18σολ) /cm3), είδος πολύτιμου λίθου (3.05g / cm3) and emerald (3.33g / cm3) have higher densities. In the indoor test with tribromomethane, only emeralds floated up, και […]