Changhua Bloodstone as a Pseudo Method:
Mosaic Method: This technique involves selecting a Changhua stone seal with good texture, then digging small pits at key locations with varying depths. These pits are filled with red mercury sulfide paint, left to dry naturally, and then ground down smoothly. Finally, wax is applied for shine. However, the fake blood created this way lacks natural layering, and the boundary between the "blood" and the stone appears abrupt and unnatural.
Impregnation Method: In this method, mercury sulfide is applied to one side of the fossil, allowed to dry, and then the stone is immersed in clear resin to absorb it. After drying, the surface is polished with fine sand. While the fake blood may look convincing at first, over time, the resin tends to yellow, causing the surface to discolor and not match the inner stone color. Additionally, the resin's surface often has visible pores that appear as tiny holes under magnification.
Slice Peeling Method: This approach involves cutting each of the six sides of the stone into thin sheets using a machine. Mercury sulfide is then applied where needed, dried, and the pieces are reassembled using heat and glue. The resulting red "blood" appears to be naturally embedded within the stone. However, the distribution of the blood is limited to one plane only. This method is suitable mainly for square or rectangular stones, as round or irregularly shaped stones cannot be cut and reassembled without revealing the seams.
Addition Method: This technique involves applying mercury sulfide to real bloodstone and covering part of the surface with a thin layer of resin. After polishing, the result looks authentic. This method enhances the value of the stone by adding more "blood," but it also increases the risk of encountering fakes. Therefore, when examining an exceptionally beautiful bloodstone, it's crucial to be aware of these techniques to avoid being deceived.
Currently, the most renowned bloodstones are Changhua Bloodstone and Bahrain Bloodstone. Based on their texture, they are generally categorized into four types: frozen bloodstone, soft ground bloodstone, soft steel plate, and regular bloodstone. These stones are often compared to Shoushan Tianhuang and are celebrated as the “Queen of Indian Stone.†They have played a significant role in the development of Chinese carving culture and continue to be highly valued by collectors worldwide.
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