Crystal Apple Teacher Award
Crystal identification: Eye view method: natural crystal can have flocculation commonly (cotton grain), namely everybody is commonly known blemish, this is the small hole that liquid drops stone and carbon dioxide, and the man-made synthesis crystal won't have such characteristic. Crystal is...
Eye view method: natural crystal can have flocculation commonly (cotton grain), namely everybody is commonly known blemish, this is the small hole that liquid drops stone and carbon dioxide, and the man-made synthesis crystal won't have such characteristic.
Crystal is the cent that has become a color grade, the factor that affects crystal price is very much, unlike diamond with 4C can decide, so everybody wants to listen to more see more comparing ability to distinguish truly. The general standard is that the larger the crystal, the better, the more transparent, the more delicate the color, the better, the more typical the shape. However, the most important thing is to like it, and there are several ways to identify the authenticity of the purchase:
(1) eyes: during the formation process of natural crystals, they are often affected by the environment and always contain some impurities. When observing the sun, you can see subtle and even fine horizontal lines or wicker substances. And pseudo crystal USES the crystal slag of remnant more, glass slag smelt, pass grinding processing, coloring imitate and become, do not have even stripe, willow catkins form material.
(2) tongue licking: even in the dog days of hot summer, the tongue licking natural crystal surface, there is cold and cool feeling. False crystal, there is no cool feeling.
(3) lighting: natural crystals stand in the sun's light and shine beautifully no matter from any Angle. Fake crystals don't.
(4) hardness: the natural crystal has a high hardness, and it will not leave any traces by gently stroke the jewelry with gravel. If there are stripes, it's a fake crystal.
(5) inspection with polarizer: when rotating 360 degrees under polarizer, the natural crystal is changed with four shades of light and four shades of light, and the fake crystal is not changed.
(6) dichroic examination: natural amethyst has dichroism, while fake crystal has no dichroism.
(7) inspection with a magnifying glass: using a tenfold magnifying glass to check under transmitted light, the bubble can be found basically as a pseudo crystal.
(8) hair inspection: only round crystal ball. Put the crystal ball on a hair, the human eye can see the double shadow of the hair through the crystal, it is the crystal ball. Mainly because of the birefringence of crystals. But it is impossible to distinguish between natural, eutrophic and fused crystals. It can only distinguish glass and other substances.
(9) thermal conductivity detection: adjust the thermal conductivity to green 4-grid to test gemstones. Natural crystal can rise to yellow 2-grid while fake crystal does not rise. When the area is large, it rises to yellow one-grid.