Traditional Culture Encyclopedia - Photography and portraiture - What kind of stone is this?

What kind of stone is this?

The characteristic of the photo is obvious, that is, the yellow wax stone. Timely is the main ingredient. This work is of average quality.

Yellowstone is named after the waxy texture on the surface of the stone. It is because of geological changes that quartzite minerals are mixed into acidic soil, and there are natural conditions such as geothermal or volcano near acidic soil, which has been catalyzed by the temperature of acidic soil and geothermal volcano for a long time and deteriorated to form olivine. Therefore, the structure is compact, the toughness is strong, and the hardness is 6.5 ~ 7.5. High-quality yellow wax stone has a yellow color and jadeite hardness, good hardness, high transparency and rich colors.