But their chemical composition and physical properties are very different. For eksempel, 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), Tourmaline (3.05g/cm3) and emerald (3.33g/cm3) have higher densities. In the indoor test with tribromomethane, only emeralds floated up, and the others sank. Emerald green emeralds resembling emeralds are generally translucent, while high-quality emeralds are transparent and can be distinguished by careful observation.
How to distinguish natural cat’s eye gemstones and artificial cat’s eye gemstones?
I de senere år, an artificial opal ring surface made of glass fiber has been sold in the market in China. Its colors are red, blå, light green and brown. Blandt dem, the brownish varieties are like natural cat’s eye gemstones, and some are inlaid. On a gold or silver ring stand, it is even hard to distinguish between true and false when worn on the hand. It is easy to judge that it is a man-made product from its low price, but if someone pretends to be a genuine product and greatly increases the price, how can it be quickly judged? The main differences are:
(1) When the ring face is rotated, the artificial opal can simultaneously show 2-3 bright bands at the top of the arc, while the natural opal has only one bright band.
(2) Natural opals can show liveliness, while man-made products appear dull and lack beauty.
OEM/ODM smykker producent design brugerdefineret dine egne smykker
Lad os komme i gang : mo@kingjy.com
Guangzhou Jingying Fokus på brugerdefinerede engros ringhalskæder Armbånd Øreringe Sterling Sølv 925 smykker,sterling sølvguldbelagt med 18 km,14K,24K Yellow Gold,Hvid guld og roseguld. Det er i stand til at brugerdefineret sterling sølvsmykker forskellige design,Logo -mærke eller andre ord ved lasergravering i henhold til kundens krav.
Vores månedlige produktionskapacitet er op til 50,000 Stykke armbånd halskædeørering,Smykkekædebutik,Outlet -butikker,smykker grossist,Forhandlere og smykkemærkefirma,Professionel leverer skab tilpassede smykker og masseproduktion af høj kvalitet 925 sterling sølv smykketjeneste.













