Mineral resource classification is the classification of mineral deposits based on their geologic certainty and economic value.
Here's a list of the top 10 most expensive cities in the country, ranked by average monthly rent for a single person: 1. San Francisco, $2,077. 2. New York City, $1,994. 3. Boston, $1,721. 4. Washington, D.C., $1,397. 5. Seattle, $1,288.
Naples is one of the wealthiest cities in the United States, with the sixth highest per capita income in America, and the second highest proportion of millionaires per capita in the US. Real estate is among the most expensive in the country, with houses for sale in excess of $40 million.