1) crystals are all crystals, and heat transfer is fast. So holding the crystal will make you feel cold, and it will synchronize with your body temperature after wearing it for a short time.

2) Glass is amorphous and has slow heat transfer. After wearing it for a while, the glass feels very warm.

2. Observation of inclusions

1) Observed with a jewelry magnifying glass of 20 times, the crystals often have defects such as natural gas liquid inclusions, flocs, primary minerals, ice cracks, spalling and so on, and most flawless crystals have problems.

2) Swirl-like fine lines often appear on the surface and inside of the glass, much like the phenomenon caused by uneven stirring after pouring honey into clear water.

3. Fracture identification

1) everyone is familiar with the fracture morphology of glass, which is a smooth and curved dent like a shell.

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2) The crystal is an ore, and the texture of the stone can be seen at the fracture, and the crystal is a crystal, and there will be no traces like glass on the cross section.

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4, hardness distinction

1) Crystal hardness 7, when the crystal cuts glass, the crystal has no trace of glass.

2) Generally, the glass is about 5.5, and the hardness test is only for crystal gemstones. Don't use this method to identify non-crystal treasures, such as organic gems, such as beeswax, coral, pearls or jade.

5, look at the identification method

1) The color of natural green ghost inclusions is usually mixed with some red or white ghosts.

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2) dyed into a brightly colored green ghost; Crystals are usually dyed light green, red, etc with dyes. Pay attention to the difference between them.

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