We should select our crystal with great care; the more perfect its quality, the
more we should desire it as the means of our development. It should be neither too
large, nor too small, and here our natural intuition should be allowed to guide us,but the Sphere be less than two and one-half inches in diameter, and it is not necessary that it be more than four. We should choose this
crystal, lovingly; at least, if a selection is presented to us we should
take the one to which, after a moment of silent consideration, we feel most attracted;
and this -- if possible -- regardless of the material consideration of its cost.....
