How to identify true or false crystals

Of natural crystal white crystal, tea, yellow crystal, crystal violet topaz, amethyst is often being generic kinds of natural crystal, technically, more easily than other crystal imitation, and for the average consumer is hard to identify whether really natural crystal, now on the market, there are many color crystal is white crystal after radiation treatment.

Here are a few ways to tell whether natural crystals are real or not.

1.Observation: natural crystal growth process is extremely complex, in the formation process, often will be affected by the environment, in the crystal always contains some impurities, the sun or under the light observation, you can see the light uniform fine horizontal grain or willow floc. And the natural crystal that copy is much use the crystal slag of remnant, vitreous slag to smelt, through processing polish, colorific is imitated and become, bubble is accompanied often in crystal, do not have even stripe, liu flocculus shape material.

2.Through feeling: It is cool and refreshing to touch natural crystal with your hand or to lick the surface of natural crystal with your tongue. False natural crystal, do not have cool and refreshing feeling.

3.Illumination effect: natural crystal can refract the magnificent color and luster under the sunlight, smooth texture

4.Detection of hardness: natural crystal hardness, with gravel in the jewelry gently stroke, will not leave traces; If there are streaks, then most are crystal glass or plastic crystal products.

5.Use a polariscope: turn 360 degrees in a polariscope and the four shades change are natural crystals.

6.Check with dichroism: natural amethyst has dichroism, false crystal has no dichroism.

7.Check with a magnifying glass: check with a ten-fold magnifier under transmission light, and you can find bubbles that are basically fake crystals.

8.Detect with thermal conductivity: adjust the thermal conductivity to green 4 grid test gem, natural crystal can rise to yellow 2 grid, but false crystal does not rise, when the area is large, rise to yellow 1 grid.