Ключевые слова: account, ag, backed, backing, bar, barter, based, driven, driver, economical, economy, element, expensive, fine, geological, grams, holdings, industry, invest, investment, market, measure, metal, mineral, mining, object, once, percentage, physical, pice, piece, polished, poured, precious, price, savings, shiny, silver, solid, stable, standard, trade, treasure, valuable, value, vault, wealth,