Introduction of naming natural decorative stone

In the colorful world of stone, how they name it? For a long time, our country and the world stone circles formed several naming convention.
1, place names add color. That stone origin plus color. Such as Indian red, white Carrara (Italy), Laiyang Green, Tianshan blue, red asbestos.
2, the image name. Namely stone colors, patterns characteristic metaphor of nature in the physical image. Such as the magnificent, snow, blue, screw turn, wood, spray, tiger.
3, the image plus color naming. In order to have a physical image of the stone patterns plus color name, such as Ai Ye, amber red, red rosin, Huang Jinyu, green Jinyu, red agate.
4, names (official) plus color name. Plus celebrity or official colors. Such as Guan Yu Red, Royal Red, Imperial red, the generals red, Guandi red.
5, animals and plants add color. In the name of the flora and fauna of the flora and fauna plus color name itself. Such as sesame white, malachite green, red daisy, chrysanthemum white. Of course there are other naming convention.
In addition, exports to the needs and resources of the census, the state also made of stone work uniform numbers, it is the number of China's natural stone with a scientific approach, but the actual work really use standardized number is not much, just in engineering use drawings and international trade in a number of documents.