An alternative investment or alternative investment fund (AIF) is an investment or fund that invests in asset classes other than stocks, bonds, and cash. The term is a relatively loose one and includes tangible assets such as precious metals, art, wine, antiques, coins, or stamps and some financial assets such as real estate, commodities, private equity, distressed securities, hedge funds, carbon credits, venture capital, film production, financial derivatives, and cryptocurrencies. Investments in real estate, forestry and shipping are also often termed "alternative" despite the ancient use of such real assets to enhance and preserve wealth. In the last century, fancy color diamonds have emerged as an alternative investment class as well. Alternative investments are to be contrasted with traditional investments.