I first thought it would sell for $ 150 million - but thenI started thinking and putting into perspective what the true value should be. Where I live my average home is valued at $ 1.5 million US. Should not the value of the largest natural gemstone- of top quality- be valued at more than 100 homes where I live ? A truly rich person might easily take the stone for over $ 300 million ( 200 average homes where I live) GLTA