The pens are valued at $730,000, making them the world’s most expensive writing instruments.
You’re looking at the Limited Edition Mystery Masterpiece pen, the result of a collaboration between Montblanc and Van Cleef & Arpels. To celebrate their centennials in 2006, the two companies made a total of nine pens, each with 840 diamonds and over 20 carats of gemstones.
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