1. Precious materials: The materials used for handmade stones are natural jade, which is precious in itself and low in output, so the price is higher.
2. The manufacturing process is very complicated: it takes many steps to make this handmade stone, including design, cutting, polishing, carving and so on. The technological process is relatively complicated and needs experienced craftsmen to operate it.
The better the appearance, the higher the value: everything has a unique texture and color, and the better the appearance, the higher the value.