从地质构成条件看,三明璧石和华安九龙璧没太大区别,而三明出优质璧石的机率似乎还更高些。华安一带九龙江河床落差大、水流冲力强,石头出形条件较好。三明的沙溪流速相对较小,石头的外形变化也小些,一般以黑白图纹为主、 Judging from the geological conditions, Sanming Bi and Huaan Jiulongbi not much difference, and Sanming out of the high-quality bi stone seems to be even higher. Huaan area along the Kowloon River bed drop, strong water impulse, the stone out of good condition. Sanming Shaxi relatively small flow rate, the shape of the stone is also smaller, usually dominated by black and white pattern,