Ah, so maybe the big ones can loan-out some of their power to several people.Maybe…
Though from some of the names in what of the Sailor V manga I've seen, it seems that both there and in this series, the Dark folks had this whole "minerals" theme going on. Beryl, jadeite, nephrite, zoisite, kunzite, fluorite…
Which is very earth-y, come to think of it.
Like, Princess Serenity had power when mom was around, but Queen Serenity mainlined it until she passed the title.