What do you think of this legendary island tribe?

There was an island called Argyre, the island of silver; silver grew on that island like flowers, like herbs, like grain. Even the rivers were mixed with pure silver that it made everything glisten like stars. The natives of the island, The Argyrians, have lived there since time immemorial; they were slender-build with thick blond or brown hair, bright silver eyes, silvery-white teeth, pale or sallow complexions and silvery saliva. After many years, the island went through a 'bankrupt-famine' leaving the island as plain as the desert and as dim as a dungeon. They left the island and, according to tradition, became the first renowned bankers, jewelers, moneylenders, usurers, stockbrokers and moneychangers; but many years later they became to avaricious and greedy with their wealth.