Clear Quartz is known as the master healer, you can tune it with any intention you wish so it works as a substitute in any spell. Use it when working with the crown chakra.
Dimensions:
A: 5.5 x 3.7cm
B: 6.4 x 3.5cm
C: 6.3 x 3.5cm
D: 4.8 x 3.6cm
E: 4.9 x 3.2cm