If you're a Japanese math geek with romantic inclinations, March 14 is a big day.
Japanese jewelry retailer Brilliance + is cashing in on this coincidence by mixing a love of math with love itself in its "Propose With Pi" campaign.
The idea is that men can compare their undying, eternal love for their ladies to the never-ending digits of pi -- and, of course, express that love with a 0.314-carat diamond ring.
The diamonds offered have ranged from 54,800 yen ($570) to 130,300 yen ($1,350).
Brilliance + also held a bridal fair to promote the rings and offered free engravings. Suggested inscriptions included the date that couples met, names, and, of course, a few digits of Pi.
The love of pi knows no bounds in Japan. In 2006, retired engineer Akira Haraguchi reportedly recited the constant to a whopping 100,000 digits.
In 2011, Shigeru Kondo of Iida, Nagano Prefecture, calculated its value to 10 trillion digits using a hacked-together PC.
The feat took more than a year of calculations. That's longer than some marriages last.
(Via Konkatsu News)