The surface is smooth and glassy; Some are uneven and waxy. Light, hard and brittle, easily broken, concentric ripples centered on the stress point can be seen on the cross section, like shells. Sharp edges and corners can scratch the glass and leave scratches. Odorless and tasteless. Fast friction is not easy to heat up. Strong quality, red color and transparency are preferred.
Extended data:
Types and characteristics of agate;
South red agate is particularly rich in color, and the lighter color is what players call persimmon red. Persimmon red is an image metaphor. Persimmons here refer to tomatoes that we are most familiar with. Persimmon red means that its color is very close to that of tomatoes, that is, there is a little pink in red.
If the persimmon red color becomes lighter, the color will turn yellow. This kind of red with yellow is also commonly known as persimmon yellow. But the persimmon here refers to the fruit persimmon we eat, not the tomato.
Rose purple is a unique and rare color in Liangshan Nanhong. It's a dark red, really like the dark red of a rose. This purple is based on red. When we see it, we will think of an idiom, the so-called "red is purple", which is probably the realm.
Rose purple is an associated color in the southern red agate of Liangshan, which generally does not appear alone, but is usually mixed with persimmon red and persimmon yellow. Often persimmon is red and yellow outside, but rose purple inside. Therefore, the raw material of rose purple is often used to make exquisite sculptures.
Baidu encyclopedia-agate
People's Network-The Past Life of Agate (Figure)