Answer:
Some will use me, others not. Some have remembered, others forgot. For profit or gain, I'm used expertly. I can't be picked off the ground or tossed into the sea. What am I?
I can be red blue purple and green. No one can reach me not even the queen.
Taken from a mine and then locked up in a wooden case. I am used by students everyday.
Take away my first letter take away my second letter take away all my letters and I would remain the same.
What gets broken without being held?
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.