Question
What are they and can you sell them have massive quantity kinda like a quartz crystal for jewlery

Answer
My son is a budding geologist, so I think I can answer this one.

Here are some pictures of them (from  Maine).  They are found all over the world.

http://www.capecodrocks.com/berylaquamarine.htm

It comes in many colors, and depending on its color, it is called different things.

When it is green, it is called an EMERALD.  When it is blue, it is called an AQUAMARINE.

http://www.therossjewelrycompany.com/beryl.html

As far as jewelry:  It is the May Birthstone, the Emerald.
http://www.idasgems.com/birthstones/emerald.html

Around here, the popular semi-precious stone in the Fire or Peacock Opals.

If you have a lot of them, then congrats, because I would imagine they are worth a bundle!  -Marc