First of all, identify it from the bone pattern. Older bones will have fine lines along the way, while resin imitations will have no bone patterns. Secondly, you can also tell whether it is a handmade work from the pattern and knife skills. Finally, the real bone carving products themselves contain a certain amount of moisture, which will release or absorb moisture as the surrounding temperature changes, but they are not hydrophobic. If you drop water on the bone carving products, the water droplets will not have obvious edges. Just wipe it with your hands. After opening, it can be evenly absorbed on the product, and water will not shrink. Artificial resin imitations are hydrophobic, that is, water droplets dripping on artificial imitations will not soak away. If you spread the water droplets with your hands, the water marks will remain. It will also shrink.