this Diamonds Are A Girl's Worst Friend: 80% of women Christians adopted the tradition De Beers company in 2007 Christians adopted the tradition Engagement Rings: Good or Bad? Slate De Beers invented the “tradition” 80% of women marketing materials this 80% of women this 80% of proposals this 80% of proposals Slate "Diamonds Are a Girl's Worst Friend" marketing materials this this this The Trouble With Engagement Rings Slate According to Slate engagements Meghan O'Rourke/Slate The Trouble With Engagement Rings Diamonds Are A Girl's Worst Friend: Slate Magazine this 80% of women "Diamonds Are a Girl's Worst Friend" provider Slate 80% of proposals than 80 percent of engagements include a diamond Slate Slate For at least 50 years in 2007 80% of women were pretty much created Christians adopted the tradition women need to be asked and presented with a ring 80% of women Slate Magazine in 2007 in 2007 Slate 80% of proposals Slate highly problematic "Diamonds Are a Girl's Worst Friend" Slate