化學組成, 鍵及結構：(礦物)

二氧化矽、石英和矽酸鹽

Chemical composition, bonding and structure: (Mineral)

Silicon dioxide, quartz and silicates.

雨花石的形成發生在長江，秦淮河和渭河兩岸，尤其是河流遇到的地方。主要由沉積，壓實和膠結作用形成。其中包括來自侵蝕山脈，沙子和其他不同顆粒的微小碎片被沖入水中，並開始沉降，形成沉澱過程。然後，更多的層會聚集在一起，並向下層施加壓力，展示壓實過程。隨著更多的地層和進一步的壓實，這將迫使水層之間的額外空間。鹽晶體將多層粘合在一起。其中，有很多天然斑斕的斑點和條紋斑斕的石頭。關於這些彩色雜色石的形成，早期形成於玄武岩裂縫中，有些形成於侏羅紀火山岩裂縫或空隙中。在熔岩凝結過程中，石英脈在寒冷條件下穿插。在壓力下，帶電荷的溶質經歷交替的電荷變化，導致二氧化矽溶質與載體介質的連續分離。一個或多個晶核凝聚形成一個美麗的圖案。由於應用的化學元素不同或各種元素的含量不同，從而形成各種顏色。

原生物：(化石)

The formation was took place in theYangtze River, the Qinhuai River and the banks of the Weihe River, especially where the rivers meet. While formed mainly by the process of sedimentation, compaction and cementation. Which included tiny debris from eroded mountains, sand and other different  particles are washed into the water and begin to settle creating the process of sedimentation. Then, more layers will build up together and putting pressure towards the lower layers, showing the process of compaction. As more strata and further compaction, this will compel the water in the extra space between the layers. The salt crystals cement the multiple layers together. Among them, there are a lot of natural variegated stones with colorful spots and stripes. About the formation of these colorful variegated stones, it is formed in the basalt cracks in a earlier period, and some were formed in the Jurassic volcanic rock cracks or voids . During the condensing process of the lava, the quartz veins interspersed during the cold conditions. Under the pressure, the charged solute undergoes an alternating change in charge, resulting in the continuous separation of silica solute from the carrier medium. One or more crystal nucleuses condense to form a beautiful pattern. Due to the different chemical elements applied or the content of various elements are different, so as to form a variety of colors were created.

Living Specimens: (Fossil)

這石頭是天然的，並且由大量的自然形狀和顏色。 雨花石的大部分都是條紋狀，有許多不規則的橢圓形，每種厚度都不同。 顏色大多是黃色，紅色，綠色和白色。 有些可能會在石上看到風景或人物。 石的成分主要是二氧化矽，所以硬度相當高。 密度相對較高。雨花石紋彩斑斕，形狀圓滑，晶瑩耀眼，五光十色，千變萬化，呈錦繡般的圖案。由於水的作用，岩石表面光滑。

This stone is a natural and consist a lot of natural shapes and colors. Most of the Yuhua stones are striped and have many different irregular oval shapes and each thickness are different. The colors are mostly yellow, red, green and white. Some may have a landscape or figure seen in the stone. The composition of the stone is mainly silicon dioxide, so the hardness is quite high. The density is relatively high.

Most of them have beautiful color patterns,  colorful and crystal bright. The surface of the rock is smooth, due to water action.