A quarter of all marriage proposals happen in the six weeks between Thanksgiving and New Year's, and most of those involve a diamond ring. Diamond sales finance civil wars around the world, and in some regions diamond mining involves horrific abuse, mutilations and murder. How hard is it to find (or define) a truly 'conflict-free' diamond? Our contributors, Beth Kobliner and Ibrahim Abdul-Matin, join us. Beth has some advice for Ibrahim, who is in the market for the right ring for his fiancée.