👉 Sulphotelluride is a type of pigment found in certain types of plants and algae, which are known for their ability to absorb sunlight. It's made up of two types of pigments, sulfothymaline (TH) and thallium (T), which have different colors and wavelengths of light absorption. The color of the pigment changes when it absorbs or reflects light, creating a unique pattern on the leaf surface. The term "sulphotelluride"