Black Tourmaline is my go-to protection stone.  It is also grounding and removes negative energies.  I set up grids with Black Tourmaline, Amber, and Selenite to put protection in my house.
 
The size is perfect for gridding, crafts, or a small travel bag of crystals. They also work well with the mini-bottles listed in the  Miscellaneous category.
 
Please let us intuitively pick out the right crystals for you.  The price listed is per crystal chip.  100 available.
 
Size:  varies