Yellow wax stone true and false identification skills : yellow wax stone, also known as dragon king jade, because of the waxy texture inside the stone surface color name (one said that this stone originate true wax country, it is called stone). It is a silicified andesite or sandstone. The main component is quartz. The surface of the oily waxy substance is a low-temperature melt with strong toughness and hardness of 6.5-7.5.
The color, texture and hardness of yellow wax stone are strikingly similar to the yellow jade (yellow enamel) in natural jade, so that when yellow wax stone just entered the market, many consumers and jewelers mistake it for jaundice, some careless The inspection department even had the mistake of identifying yellowstone as jaundice. The non-destructive identification methods of the two can be distinguished mainly by their significant differences in mineral particle size, density, refractive index, polished surface texture and limonite distribution characteristics under a high magnification magnifier.
See the graininess and polished surface texture: the composition of high-quality yellow wax stone is opal or chalcedony. The mineral particle size is generally less than 0.01 mm, and the particles are generally invisible to the naked eye. The composition of Astragalus is sodium-aluminum, the mineral particle size is generally larger than 0.01 mm, the optical particles (green, or sputum) exhibited by the crystal particles and the cleavage surface of the particles are generally visible to the naked eye. That is to say, the high-quality Huanglongyu has very fine particles, and the particles are invisible to the naked eye. Therefore, the light characteristics on the polished surface are not green (or sturdy), there is no micro-corrugation, and the scutellaria is green (or Weighing), there are micro-ripples;
Handcuff weight: The density of yellow wax and scutellaria is different. The density of the former is 2.60, and the density of the latter is 3.33, which results in the same size of the handcuffs, and the yellow wax is obviously lighter than the jaundice;
Measuring refractive index: The refractive index of yellow wax is 1.54, and the refractive index of jaundice is 1.66. This difference makes the yellow light stone's refractive index, gloss and other light characteristics significantly weaker than jaundice;
The distribution characteristics of limonite under high magnification magnifying glass: the yellow-brown colloidal limonite of yellow wax is uniformly dispersed in the amorphous opal or cryptocrystalline chalcedony, showing no network distribution; yellowish brown The colloidal limonite is filled in the intercrystalline space of the fine-grained sodium-aluminum, showing the characteristics of the network distribution.
Needle Flame Test Apparatus,Flammability Needle Apparatus,Needle Flame Tester Machine,Needle Flame Retardant Test Equipment
Dongguan Best Instrument Technology Co., Ltd , https://www.best-tester.com