Artist Brandon ballengee used a chemical process to make the skin and tissues of the frog transparent, while staining the bones.

If staining, we must use an organic dye, that is, natural vegetable dyes, and dyeing process, chemical synthesis may not add any additives.

The levels of water absorption, thermal shock, frost resistance, resistance of chemical etching, resistance to staining and luster are higher than any normal micro-powder tiles.