The crystal and agate of the beautiful stone family

- Sep 12, 2019-

"Beautiful stone" is a very broad concept, among which people are most familiar with jade.There are narrow sense and broad sense of "jade" in academic circles.In a narrow sense, "jade" is the most common and favorite mainstream stone material, which is bright and clean, warm and moist, beautiful in color, containing but not colourful, and pure.

MT121Check: being supplied with a human hair is limited to a round crystal ball.Put the crystal ball on a hair, the human eye can see through the crystal hair double shadow, is the crystal ball.Mainly because crystals are birefringent.However, it is impossible to distinguish between natural crystals, eutrophic crystals and fused crystals.Only distinguish glass and other substances.