Why was it important to examine both the color and the streak of your minerals? Think about streak and explain why it's called a mineral's "true color". Answer in at least 2 sentences.

The streak is the colour presented by a mineral when put into powder, in other words, in its most isolated way. The colour of a mineral, when in a rock, may be influenced by its crystal conformation, other minerals in it, or even the cut. That's why, the streak is considered the "true colour" of a mineral.