You are here: Home > Healthy > Identification of precious stones commonly used instruments and usage

Identification of precious stones commonly used instruments and usage

to see fracture and cleavage fracture and fracture surface for what kind of luster, the identification of certain precious stones is particularly important. Most of the gem with glass luster for the shell-like fracture, translucent and opaque jade mostly granular, staggered fracture. Such as coral fracture is dull, jagged fracture; amber fracture for the resin luster, shell-like fracture; chalcedony, agate fracture for the resin luster, shell-like fracture; turquoise for the faint grease shiny, granular or shell-like fracture; Dense jade, Dongling stone for the granular, uneven fracture. Cleavery is also one of the basis of identification of precious stones, only a few gems have obvious cleavage, such as diamonds, topaz and so on.

9) birefringence and pleochroism with 10 times the magnifying glass can see part of the flip-shaped transparent gem at the edge of the double shadow, the characteristics of the important basis for the identification of precious stones. Strong gem of the nature of the common gem only zircon, olivine, tourmaline, rutile. Part of the color of the gem of color, with the naked eye can see. Tourmaline blue and green and brown green dichroism and ruby, sapphire, zircon, andalusite, stone and so on as long as the gem can see the obvious dichroism.

10) to see the special optical effects of some Replica Cartier jewelry precious stones have a special optical effect, the emergence of any kind of optical phenomena, are likely to narrow the unknown gem forecast range. Will be turned over the top of the gem, placed on a white background, with a pen is a tube from different angles of the bottom of the sample, if the flat surface reflected around or around the waist of the red circle, it may be purple teeth or glass Two layers of stone, pay attention to red, purple or thin sample can not see the red circle. From the dark hue of the bright blue gems issued a red flash, can be considered artificial spinel or Tanzanian stone. Individual gems can produce color changes under different light sources. Stone in the natural light for the purple blue, tungsten light red purple. Ice feldspar halo color change color in different light. Opal has a special multicolored color change. Aquamarine often appear snowflakes flash. Common shore light gems are ruby, sapphire, hibiscus stone, purple teeth Ukraine. Starlight gems have spinel, pyroxene, hornblende, if the gem a fine light and obvious, another wide and fuzzy, see a lot of magnifying glass under the appearance of metal inclusions, it is diamonds star gem. Common cat’s eye gems are gold and green stones, crystal, aquamarine, tourmaline, feldspar, swim like tiger eyes, Hawkeye is wood stone.

  1. Identification of precious stones commonly used instruments and usage

Macroscopic identification, although in most cases is accurate, can also be wrong when. Especially with modern technology to produce a similar natural gem of artificial products, the first time to meet, it may be fooled.

The use of modern crystallography, mineralogy and optical knowledge, coupled with some instruments and equipment, it is possible to more accurately identify the gem, although it may be slower, but not prone to error. Even for those who have no experience with gems, after learning some of this knowledge, it is possible to more accurately identify some common gems. In order to identify gems, people use many instruments from simple to complex and expensive. However, the requirements of the identification of precious stones and mineralogy is different from the precision of mineral identification requirements, the measured data to try to be accurate, therefore, often use the price is extremely expensive high-level equipment. Gem identification is not the case, it can be summarized as the following requirements: the device is relatively simple price is low, generally only in qualitative, must be convenient and fast, requires no damage to the sample, the cost is low. The following instruments used to identify gemstones and usage of a brief introduction:

1) Magnifier Magnifier is the most used tool for identifying gems. Because the human eye is limited, most people can see the smallest object about 0.1-0.2mm. And gems within the lines, cracks, inclusions, etc., often too small to see the naked eye, then you must rely on the magnifying glass. Identification of gems with magnifying glass, multiple should not be less than 8-10 times, it is best to prepare a 20 times the magnifying glass. Magnifier to use the correct method is: the magnifying glass as close as possible to the eyes, and then tweezers with tweezers, slowly close to the magnifying glass, to the most clear so far. Or put the stones on the table of discs, magnifying glass attached to the eyes, the head of the gem slowly moved closer until the gem is seen most clearly so far.

2) Spotlight With a flashlight with a small light bulb, you can observe the transparency of precious stones

Tags: ,

Comments are closed.

Links : Hermes Clic H Bracelet replica | Cartier LOVE Ring replica | Cartier replica love bracelet | Fake Van Cleef & Arpels Jewelry