玛瑙也作码瑙、马瑙、马脑等，是玉髓类矿物的一种，经常是混有蛋白石和隐晶

Agate is also used as code onyx, onyx, horse brain, etc. It is a kind of chalcedony minerals. It is often a band-shaped block mixed with opal and cryptocrystalline quartz. The hardness is generally 6.5-7 degrees and the specific gravity is 2.65. The color is quite hierarchical, with translucent or opaque, the original form of the trigonal crystal system. The common one is the concentric circle structure. Chalcedony composed of different colors, usually green, red, yellow, brown, white and other colors, is often used as playthings, ornaments, ornaments or playthings.

Agate is also known as code agate, horse agate, horse brain, etc. it is a kind of chalcedony minerals. It is often a striped block mixed with Opal and cryptocrystalline quartz. Its hardness is generally 6.5-7 degrees, with a specific gravity of 2.65. Its color is quite hierarchical, translucent or opaque, and its original form is cubic crystal system. The common is concentric circle structure. Chalcedony with different colors, usually green, red, yellow, brown, white and other colors, is often used as playthings, ornamental objects, ornaments or ornamental objects.

Agate, also known as Manao, Kate Ma, Manao, etc., is a kind of chalcedony mineral, often a striped block mixed with opal and cryptocrystalline Shi Ying. Its hardness is generally 6.5-7 degrees, specific gravity is 2.65, its color is quite hierarchical, translucent or opaque, and its original form is triangular crystal system. Common for concentric circle structure. Chalcedony with different colors, usually green, red, yellow, brown, white and other colors, is often used as plaything, ornamental object, ornament or ornamental object.