They include nonlinear, photorefractive crystals, and laser crystals’ acousto-optic and electro-optic combinations; X-ray analysis and scintillation crystals; and other types of crystals ... Some ...

Clear Quartz The "master healer," Clear Quartz ... You could use certain types of crystals to enhance your child's learning skills, memory capacity and academic performance.

There are several types of crystals, each having their own properties ... Adding a "key stone," such as clear quartz or another stone that relates to your intention, may facilitate the directing ...

If you’re anything like me whenever you spot an interesting rock, it’s destined to make its way into your pocket.