Behold the $1.5K Business Card World's most expensive card available by invitation only By Matt Cantor, Newser User Posted Jan 10, 2012 4:28 PM CST 5 comments Comments A screen grab from Black Astrum's site. (BlackAstrum.com) (Newser) – Here's a business card that will definitely make an impression: The new Black Astrum Signature series features $1,500 cards made of Swiss metal and covered in diamonds—some more than 30 carats. But even if you've got thousands to spare on the cards, you may be out of luck: The company will sell only to the extreme elite, and they're aimed at folks in Europe, Asia, and the Middle East, Business Insider reports. "We’ve had several enquiries from American celebrities and international businessmen; however, our cards are offered by invitation only, reflecting our desire to serve only the most premier individuals," says a rep. Looking for something a little cheaper? Try Facebook Timeline cards.