The septarian (or seven stones) is a mineral aggregate that has the appearance of an agate. It is formed when iron oxides precipitate out and form microcrystals that combine with silica to produce bands of different colors. Septarian quartz may also display hues from brown to black with white veins.
Appropriate Weights and Diameters
A - W- 73g D- 3.7cm
B - W- 82g D- 3.9cm
C - W- 137g D- 4.6cm
D - W- 155g D- 4.8cm