Blue Nile (NASDAQ:NILE) recently reported better-than-expected quarterly earnings, thanks in part to growth in its high-end business. And Wall Street has taken a shine to the online jeweler lately -- shares are up around 60% over the last year. So should investors be making a lasting engagement with the engagement ring retailer? The Motley Fool's Mac Greer talks with Blue Nile President Diane Irvine.

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Mac Greer doesn't own any shares of Blue Nile and had no idea, until recently, that the word "girdle" could be applied to a diamond. The Fool has a disclosure policy.