(1). Crystal is a crystal with a high hardness (Mohs grade 7), while glass has a low hardness (Mohs 5.5), crystal can mark on the glass, and vice versa.
(2). Crystal is a crystalline body with good thermal conductivity, and it feels cold with the tip of the tongue. The glass looks warm.
(3). Different from the polarizer, the crystal can transmit light, but the glass can't.
(4). The high-quality crystal looks bright and clear, with no small bubbles and no water marks inside, so it is expensive. Therefore, the quality level of the crystal and the price are very relevant.
5. Different processing technology Glass can be hot-casted, saving materials and labor, and low cost. Crystal is a crystal, which cannot be reversed after heating and melting. Therefore, it cannot be used in the hot casting method, and only cold working such as cutting or grinding can be used.
Identification of crystal and glass
1. Wipe or wash the crystal crafts to be identified. After drying, use the tip of the tongue to touch the crafts. If there is a cold feeling, it is a crystal product. If it is warm, it is a glass. During the test, try not to take the sample by hand or place the sample near the heat source (in the sun, near the stove) to avoid an error in the temperature of the sample.
2. The crafts are observed with a magnifying glass. In the interior of the glass, there are often swirling or curved curved lines caused by uneven melting, and there is absolutely no crystal. In addition, there are often many bubbles in the glass, and there are few crystals.