THE SMART TRICK OF CRYSTAL THAT NO ONE IS DISCUSSING

看颜色：即使在同一种类的水晶中，它的不同部位的纹理、色泽也各式各有千秋。属于单色的，要色度均匀；在同一块水晶上有深浅的，则要求其色调纹路美观大方。Bismuth (Bi) seems to generally be a metallic, but the volume of electrons obtainable for electrical conduction is analogous to tha