What is a Crystal?
Find basic information on crystals, recipes, etc.  (Some ads)

Crystals:  Flowers of the Mineral Kingdom
This site provides information and diagrams on the different crystal systems.

Minerals, Crystals, Gems:  Stepping Stones to Inquiry
This site starts with a four-part essay on minerals, crystals, and gems.  It also provides three lesson plans for teachers.

Real World – Viewing Crystals
View crystals mathematically, including the 7 crystal systems with descriptions and examples.

Cal Poly Materials Engineering – Chapter 3 – Crystal Slides
See some really good slides of crystals and crystal structure.

BrainPOP Movie -- Crystals
This movie with instructional sound describes crystal structure and where they are encountered.

Physics Animations -- Mechanics
Find an animation of the channeling of electrons and positrons in a crystal, along with a brief discussion of the theory involved.

New Areas to Conquer
Learn how advances in technology may be changing the ease with which crystals can be studied.

Bragg’s Law and Diffraction:  How Waves Reveal the Atomic Structure of Crystals
A discussion of Bragg’s Law is presented.  There is an interactive Applet which allows you to vary the wavelength, distance, and angle to see the effect on a reflected ray.