Gold Purity As the most malleable of all precious metals, gold is an excellent choice when crafting designs with very intricate details. Pluss, 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 […]
Kategoriarkiv: Smykkernyheter
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, som 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 si, 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, de er […]
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 […]
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; for det andre, […]
Enda viktigere: Legg kunstig rød og safir på hvitt papir eller i vannet i en hvit beholder for å observere. Fargebåndene eller vekstlinjene er for det meste buede og buede, mens de sekskantede vekstlinjene til naturlige produkter er svakt buede. Båndet er rett. I tillegg, the fluorescence of artificial rubies is stronger […]
Men deres kjemiske sammensetning og fysiske egenskaper er svært forskjellige. For eksempel, smaragd har en hardhet på 7.5-8, mens fluoritt har en hardhet på 4; smaragder har en tetthet på ca. 2,7 g/cm3, mens fluoritt (3.18g) /cm3), TOURMALINE (3.05g/cm3) og smaragd (3.33g/cm3) har høyere tettheter. I innendørstesten med tribrommetan, bare smaragder fløt opp, og […]
Naturlige smaragder kan deles inn i to typer: (1) Amerikansk type: inkluderer smaragder produsert i Colombia, Brasil og USA. Det er preget av lav brytningsindeks, liten egenvekt, ultrafiolett (lang bølge) bestråling og fluorescens, og fargen blir rød når den observeres med Charles-filter. (2) Afrikansk type: smaragder produsert i Zimbabwe, Sør […]