Chemical composition: SiO2
Characteristics: the case of Aphanitic, the proportion of 2.62 ~ 2.64, hardness 6.5 to 7, a porous, cleavage was not obvious, at under a microscope has crystalline structure quality. Pseudocaranx was shaped or ribbon, the color may be different on each floor, parallel bands, but also wavy or irregular line can was white, light to Green or gray, often artificial coloring. General moss agate contain obvious inclusions, and were dendritic or moss-like pattern.
Occurrence: In the igneous rock crystal cave, from aqueous solution by precipitation. Jing-dong has a beautiful center is often accompanied by transparent Transmission, and even have water or air bubbles, a lot of color change in itself, its internal folders usually have other ores.
Uses: precious stones, mortars, crafts, decorations.
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