These are Citrine crystals from Brazil in sizes from 3/4″ to 1 1/2+” in size.  Most of these have crystal structure with tips but the tips will be bruised or damaged some, they would make nice tumbled crystal for jewelry or just for decoration.  They range from very clear to slightly smoky with darker tips.  Great for the rock tumbler or use them just as is for fountains or other decorative uses.

MOHS hardness scale of  7