Crystal and glass are very similar in appearance, but are two completely different substances. Crystal and glass are distinguished by their color, hardness and impurities.
1. Color
Crystal is transparent and bright; glass is white with a slight greenish or yellowish tinge and is not bright enough.
2、Hardness
Crystal hardness is 7, while the glass is about 5.5. If you use the fresh edges of natural crystal crystals to scratch, you can scratch the glass.
3、Impurities
Crystal is a natural crystallization, the body is often uneven and imperfect signs, while the glass is artificial melting effect, the body is often uniform and no sheep, there are often small bubbles inside the glass, crystal is the opposite; crystal and glass, such as licking with the tongue, the crystal has a cool feeling, while the glass has a warm feeling.
