Swiss businesswoman and well-known art collector Esther Grether comes with an estimated net worth of $2.2 billion as of March 2013 according to Forbes. Grether amassed most of her net worth from inheriting her husband’sbeauty and health care products firm in 1975. Grether now runs the company along with her kids. For over 30 years, Esther Grether served as the Chairperson ofDoetsch Grether Group that is located in Basel. Since 1986, Grether has been serving as a member of theBoard of Directors of Swatch Group where she is the next largest shareholder. Along with truly being a billionaire and businesswoman, Esther Grether is also proven to have a precious and extensive number of 20th century arts. Grether now has more than 600 artwork pieces made byPaul Czanne, Alberto Giacometti, Francis Bacon,Salvador Dal and Pablo Picasso.