The natural and elegant appearance of the rainbow hickoryite necklace I've just received is no accident. The stones are smooth, unique, substantial and alluring as other reviewers have respectfully described. The order and array of the stones has been carefully considered in their assemblage and is significant to the natural rythm of color, tone, and the random aspect of striation within each stone. Very tastefully done. This necklace will give lasting pleasure with compliments to the King!