Agate is a cryptocrystalline variant of quartz, characterized by its fine texture and vibrant colors. Although agate can appear in various types of rocks, it is commonly associated with volcanic rocks and is frequently found in metamorphic rocks.
The name "agate" in European languages comes from the ancient Greek philosopher and naturalist Theophrastus, who discovered agate on the bank of the Achates River (now called the Dirillo River) in Sicily in the 4th to 3rd century BCE. People have been collecting various colors of agate and chalcedony there for over 3,000 years.
In Chinese, agate is also known as "wenshi," "manao," "qiongyu," "chiyu," and so on, and has various colors, such as:
Red agate, which represents joy and wearing it can make people happy and beautiful; Green agate, which brings good luck and happiness; Blue agate, which is a symbol of nobility and can demonstrate the wearer's high-quality characteristics.