The first stage is that cypress secretes resin;
In the second stage, the resin was deeply buried and petrified, and the composition, structure and characteristics of the resin changed obviously.
The third stage is that the petrochemical resin is washed, transported, deposited and diagenetic, thus forming amber.
2. Amber
It is a transparent biological fossil, a resin fossil of Pinaceae, Pistaceae, Taxodiaceae and other plants. Resin drips and leaks, buried underground for thousands of years, and becomes fossils under the action of pressure and heat, some of which contain small insects such as bees, which is very unusual. Amber is mostly formed by resin fossils of Pinaceae plants, so it is also called "turpentine fossil".
Extended data:
Common methods for identifying amber:
1. Test specific gravity: When amber is put into the salt water of 1:4, natural amber will float and counterfeit will sink. The density of amber is between 1.05- 1. 10, and the texture is very light.
2, hot with a needle: hot amber skin with a red-hot needle, natural amber will be black, but it will not stick to the needle, it will have a loose fragrance, and the fake will stick to the needle and even have a plastic smell;
3, listen to the sound: natural amber beads that are not inlaid, gently rubbed in the hands will make a soft and slightly dull sound, and the falsetto is crisp;
4. Look at the luster: natural amber is naturally moist, the luster and texture of the fake are cold and hard, and the things wrapped inside will have a stiff feeling. Natural amber has different angles, different shades of color and refraction under sunlight, while counterfeit amber has no such effect. When amber is placed under the money detector and irradiated with ultraviolet rays, natural amber will emit green, blue and white fluorescence, while the counterfeit will not change color.
Reference source: Baidu Encyclopedia-Amber