It's Tiara Thursday at The Royal Order of Sartorial Splendor, where each week the provenance & history of a different royal tiara is highlighted. You could start browsing from top 15 readers' favorite tiaras or the top 10 ultimate tiara collection, featuring such sparkly as the Danish Ruby Parure Tiara and the Girls of Great Britain & Ireland Tiara. [more inside]
posted by flex on Jan 3, 2013 - 47 comments

Oceans of liquid diamond, filled with solid diamond icebergs, could be floating on Neptune and Uranus, according to a recent article in the journal Nature Physics. The research, based on the first detailed measurements of the melting point of diamond, found diamond behaves like water during freezing and melting, with solid forms floating atop liquid forms.
posted by billysumday on Jan 19, 2010 - 96 comments

First a goose, then Sigourney and now really old diamonds. A diamond field in Northern Ontario, Canada has turned up a 1.5 Carat diamond from what is believed to be the world's oldest diamond deposit at 2.697 billion years old. The diamonds were found, of all places, just 12 kilometers from the small town of Wawa, Ontario (www.wawa.cc) - previously famous for being home to the world's biggest goose and filming location of the 2006 film Snow Cake starring Alan Rickman and Sigourney Weaver.
posted by empatterson on Apr 20, 2007 - 37 comments

The giant spiraling hole in the ground near Mirny, Russia in Siberia is perhaps the world's largest open pit diamond mine. More giant holes.
posted by Burhanistan on Mar 12, 2007 - 48 comments

Famous Diamonds [Tripod page, but a really good one]
posted by Pseudoephedrine on Sep 7, 2004 - 9 comments

Diamonds , a symbol of love for a large part of this century. Yet there is an underlying monopoly who have socially engineered the whole entire idea that a "Diamond is Forever". Does your notion of a diamond change knowing that a consortium is ensuring that their Monopoly is Forever?
posted by mutantdisco! on Aug 14, 2002 - 105 comments

Most Valuable Object in the World The Supreme Purple Star - as it is being called - is a deep purple diamond, turning to crimson when rotated in the light. Diamonds come in a rainbow of colors and are called "fancies" in the trade. Some are beautiful, others less so. This one is the only one of it's kind, and has been pronounced "priceless". The speculation, of course, is that the owner is looking to sell it.
posted by Irontom on Jun 17, 2002 - 20 comments