It is interesting how part of the crystal appears bright white, and the remainder is a duller white, appearing almost gray in some lighting. It also has a wonderful, smooth feel to it and is delightful to hold. It is also fascinating how light plays through the milky depths of the crystal. It is rather rare to find a double-terminated quartz crystal (i.e., with a "point" on both ends) in nature, so that makes this one very special.
For more information:
1 Wikipedia: Quartz