1, gravel, sand, etc. After weathering and erosion, large stones may break down into smaller particles and fragments, eventually forming cuttings such as sand, pebbles and gravels.

2. Limestone and gypsum, etc. Under the influence of geology and chemistry, stones may be dissolved or transformed into other kinds of minerals. For example, limestone can be converted into gypsum and marble under the action of water and carbon dioxide.

3. Gems, jade, etc. Some specific types of gems, such as diamonds, turquoise, amber, etc. , with high value and aesthetic value, is often processed into jewelry or decorations.