There are two kinds of crystal fruit bowls, one is natural crystal, the other is artificial crystal, what is artificial crystal? Artificial crystals are high-lead glass, or lead-crystal glass, which is a synthetic crystal with brightness and transparency similar to that of natural crystal by adding 24% lead oxide to ordinary glass (component of silica).
Characteristics: The international standard of lead oxide content is 24%. At this time, the chemical properties of artificial crystals are the best. Compared with ordinary glass, the main ones are heavy and heavy, and the refractive index is large, which can transmit the multicolored colors of the spectrum. High and wear resistant.
Uses: Lead glass containing 24% lead oxide is refined, removed by impurities, hand blown, polished and polished, and can be made into high-grade high-quality lead glass artwork. The light can be multicolored by the engraved facets.
The crystal products are divided into crystal stone and crystal glue. The crystal stone material is stone, and the crystal glue raw material is resin. The transparency and weight of the former are better than the latter, and the latter products are more expensive to manufacture than the former.
The general crystal trophy is composed of several parts. The adhesion between each part is glued by the shadowless glue and needs to be adhered to by ultraviolet rays. The glue sticks without bubbles and has high adhesion.
1. Look at the gloss: Compared with the sun, the colorful light reflected by the high-quality crystal is bright, and the transition light is very natural and rich. The color of the glass is often incomplete and dim. The transparency is compared under natural light. The high-quality crystal has a high transparency and shows a crystal white, while ordinary glass or impure crystals will be yellow or cyan.
2. Ratio pattern: For crystals of the same color, the higher the hand-made degree of the pattern, the finer and more complicated the pattern is formed on a small area, and the higher the value. Hand touched, the surface of the hand-patterned pattern has a rough feel of pickpockets, while the surface of the mechanism pattern is smooth.
3. Specific hardness: Since the crystal hardness is much higher than that of ordinary glass, it will not be stained for a long time, and the glass is used for a long time, it is easy to have scratches and surface stains. Artificial crystals are harder than glass, so there is a trace of scratching the surface of the glass with artificial crystals, and no traces of this when using crystals.
4. 掂 Weight: Two items of the same size, artificial crystal products are heavier than glass, and glass is relatively lighter.
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