Gold Purity As the most malleable of all precious metals, gold is an excellent choice when crafting designs with very intricate details. Plus, 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 […]
Kategori Arkiver: Smykker nyheder
defect? Why are the cut shapes of the same gemstones different? What is the corresponding relationship between gem quality evaluation and price? og mange flere. 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, såsom diamanter, Rubiner, safirer, […]
There is a certain relationship between the caliber (inner diameter) of a jade bracelet and the thickness of the diameter. Det vil sige, 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, form, størrelse, glans, osv. If it is a bead or a batch of pearls, for real pearls, Det er de […]
Diamonds are noble and luxurious ornaments, and jewelry with natural diamonds is the crown of jewelry. Imidlertid, diamonds are scarce and expensive, especially the larger ones, and most people don’t dare to care about them. Som et resultat, 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 […]
Med hensyn til forstørrelsen af et forstørrelsesglas til smykker, nogle mennesker tror, at jo større jo bedre, det er det faktisk ikke, fordi med hensyn til linseproduktion, det overstiger 10 gange og kan garantere dens optiske kvalitet og klare blænde (den klare blænde på forstørrelsesglasset er 16-20 mm) Passende) er meget svært; for det andet, […]
Endnu vigtigere: Sæt kunstig rød og safir på hvidt papir eller i vandet i en hvid beholder for at observere. Farvebåndene eller vækstlinjerne er for det meste buede og buede, mens de sekskantede vækstlinjer for naturlige produkter er let buede. Båndet er lige. Derudover, the fluorescence of artificial rubies is stronger […]
Men deres kemiske sammensætning og fysiske egenskaber er meget forskellige. For eksempel, smaragd har en hårdhed på 7.5-8, mens fluorit har en hårdhed på 4; smaragder har en tæthed på omkring 2,7 g/cm3, mens fluorit (3.18g) /cm3), Tourmaline (3.05g/cm3) og smaragd (3.33g/cm3) har højere tætheder. I den indendørs test med tribrommethan, kun smaragder flød op, og […]
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, Syd […]