1. chronological is one of the most widely distributed minerals on the earth's surface, and there are many kinds of chronological. The raw materials of daily-use ceramics include timely, quartz sand, quartzite, sandstone, silica, opal and diatomite. Like ordinary sand and crystal, it is a substance that "comes out of the womb".

2. Nephrite refers to Hetian jade in a narrow sense, and broadly includes more than ten kinds of nephrite such as xiuyan jade, Nanyang jade and Jiuquan jade. Many nephrite have the same long history, such as xiuyan jade. Jade only refers to jade.

Second, the types are different.

1, nephrite mainly includes white jade, sapphire, topaz, purple jade, jet, jasper, sapphire and ruby. Among them, topaz such as engine oil is top grade, purple jade is usually light pink, jet jade is jade with many black spots on jasper, and sapphire is dull blue and white jade. Usually white jade is the best.

Emerald is jade, and its colors are white, purple and green. It can be called ice land (white) or green land (green). Green is the best. Tri-colored jadeite is also called "Taoyuan Jieyi" or "Fu Lushou".

2. Quartz sand can be divided into ordinary quartz sand, refined quartz sand, high-purity quartz sand and fused quartz sand.

Third, the use is different.

Quartz sand is an important industrial mineral raw material, which is widely used in glass, casting, ceramics and refractories, metallurgy, construction, chemical industry, plastics, rubber, abrasives and other industries.

Jade is generally used as an ornament.