One of the most amazing experiences a crystal lover can have is a genuine connection to the crystal and how you are going to use it.  Specific situations require laser like precision so what we manifest reflects our intention.  Size doesn't matter when you know how to draw on the amazing power that resides in the every crystals earth connection even if it is a simple tumbled stone. Bring a crystal to each workshop and use the technique from then on for your collection (individually) or any new crystal you buy.