The polishing and the buffing of each stone must occur in its
country of origin so that locals can legitimately benefit from
working with the minerals and this natural resource.
The human working conditions must be excellent
(remuneration, respect for the environment, sanitary
conditions), not only for philosophical reasons but also
because the vibrational frequency of the minerals must remain
intact.
Polishing and buffing in regions that practice slave labour and
child labour are strictly prohibited.