Natural sapphire color is often uneven , and most have a flat growth pattern molten gold machine . Diamond also has a lipophilic , such as the surface of a diamond pen to draw a line , then into a continuous straight line , while other gems break off in the form . As precious stones
On the market over three karats than what is very rare natural ruby playing machine, such as a large block of ruby encounter , we should give rise to note that due to the nature of artificial ruby ruby higher than the value of thousands of times , the slightest negligence . The above methods in the identification of diamonds have some reference value first
Finishing Equipment . Haoguang radiance . And the thermal conductivity is much lower than the diamond , can be " thermal conductivity meter " identified correctly to separate. You can also use the " scale of hardness " characterization , where the hardness is less than 9 degrees are fake diamonds.
There is a strong natural ruby " dichroic " jewelry tool called dichroism , from different directions to see the red and orange-red two kinds of colors, such as only one color , it may be a red spinel , garnet or red glass.
CZ : Much like diamonds, diamonds best substitutes. In addition, the hardness of the easiest methods available assays , natural sapphire can be carved out marks on the topaz , and the other depicts the blue gem is difficult to trace the topaz jewelry equipment , so when buying jewelry , such as around
No instrument , as long as there is a topaz , and sometimes can solve some problems. CZ is a synthetic compound carving wax, but in terms of dispersion , refractive index , etc. and is very close to natural diamonds , also has a "fire" attractive shiny appearance .
Other precious stones and natural sapphire different color former , pursuant to distinguish wax injection machine .
Natural gem "Ten Red 9 crack " , with no flaws and cracks extremely rare natural ruby . Natural Sapphire also has a significant dichroism , look for the blue from one direction , from the other direction , compared with blue-green. And consistent synthetic ruby color, an internal defect or knot
Less crystalline inclusions , clean , large gold-plated water block .
Diamond is the hardest natural substance material , diamond can characterize any other precious stones, but they are nothing but any other gem diamond scribe does not move . The most accurate and reliable method is to use " thermal conductivity meter " measured thermal conductivity data to distinguish between genuine and fake diamonds , but " thermal conductivity meter " price is more expensive.
However, its low hardness ( 8.5 ) , each with diamond scribing distinguish mending .
Glass: the refractive index of glass is very low, there is no kind of flashing colored diamonds haoguang ; especially into the water , glass color, nothing, immediately showing surprising flaws . Identification method , zircon and big because with polarization birefringence of ultrasonic cleaning machines , when used 10 times magnifying glass
Zircon Faceted observed after processing , under its top face look , you can see the bottom of the ridge has a significant double shadow , but no double diamond film phenomenon . Magnifying glass can also be observed by 10 times , 10 times under a magnifying glass , there is a triangle of growth pattern , the surface of the diamond "red , orange, blue
" Other colors " Fire " light.
CZ : namely cubic zirconia, first developed by the Soviet Union succeeded , named magnetic polishing machine . Synthetic sapphire color consistency , the growth pattern of the curved band , often visible body has breadcrumbs shape or beaded bubbles.
Crystal : Crystal is certainly transparent natural mineral crystals, like diamonds after processing , but the lack of color diamonds haoguang steam cleaning machine . And natural ruby red spinel is very similar , the two most likely muddy , so necessary to be particularly careful .