depends where you shop and what quality... if you want a "good" diamond (SI1-SI2 clarity, G-H color) then....if you get it from a mall, expect to pay $17,000+ for a good one.if you get it from a plaza, expect to pay $15,000 for the same oneif you get it online, you can get it for around $13,000my favorite website is http://www.dyjewels.com, this is a search for their diamonds in that specifications range:http://www.dyjewels.com/cgi-bin/diam...e al&x=60&y=5