What is the material of bracelet beads?

The bracelet beads are made of chalcedony.

Chalcedony is a mineral, also known as "chalcedony". Chalcedony is actually a kind of timeliness, SiO? The general name of aphanitic body is a variety of timely. It is produced in the form of breast milk or stalactite, usually in the form of kidney, stalactite, grape and so on. , with a waxy light.

Chalcedony is formed at low temperature and low pressure, appearing in caves, hydrothermal veins, hot spring sediments, clastic sediments and weathered shells of ejected rocks. Some chalcedony tuberculosis will contain water and bubbles, which is very interesting. Its physical properties are the same as those of the time.

Chalcedony is regarded as a gem, which is mainly used as a material for jewelry and handicrafts. It is well known that chalcedony and agate are the same mineral. The aphanitic with banded structure should be agate, and the aphanitic without banded structure and uniform color should be chalcedony.