In short, they are a universally recognized aphrodisiac ...
They are not diamonds, which are a girl's best friend, according to Maryln Monre in ' gentlemen prefer blonds' a frequently repeated movie. They are lesser rocks which ALSO hold value, and depending on the place you come from might be preferable to other diamonds.
And diamonds, secreted in various locations in the human body, kept a lot of people alive in the years before WWII and during WWII.
also the birthstone of may!