The quality of stone texture is directly related to the market price. The texture of Changhua bloodstone can be divided into four categories: frozen ground, soft ground, steel ground and hard ground. Frozen soil is the best. The easiest way to identify the texture is to carve it with a carving knife. Frozen stone is soft and brittle when carved with a meat cleaver. Soft ground refers to the combination of frozen soil and soft ground, or some soft stones with no frozen soil at all, which are easier to carve with a carving knife. The steel grindstone looks like frozen ground, but it is not as bright as frozen ground stone. The blood in the steel field is a little dim, so it is not easy to carve it out with a meat cleaver. Generally, there are many ornaments made. The hard ground is the worst stone in the fossil. The texture of the stone is dull and lifeless, and the carving knife will slip when carving, so it is not the object of collectors' purchase.

The price of bloodstone mainly depends on the texture of stone, the surface of blood and the freshness of blood color. Therefore, buying bloodstone must look at the texture, the size of chicken blood clot and the brightness of chicken blood. Sometimes, from the appearance, the price of the same stone is far from the price of blood, so tourists buy it when they think it is cheap. In fact, the finished stones with low price and high blood volume are mostly steel or hard ground.

Second, pay attention to whether there are cracks when buying. Now mining with explosives, cracks are inevitable. When processing, it is often not easy to see the cracks when craftsmen deal with bloodstone. When buying bloodstone, don't buy bloodstone soaked in oil, but buy waxed and polished finished products. Waxed and polished products can see the problem better than those soaked in oil. As long as you study hard, practice more and accumulate experience, you will gain something.