Painite is a dark red or brownish-orange red ... that can be faceted have been found since then, making this the rarest gemstone in the world. The mineral is named after gemologist, A.C.D ...

Black opal is one of the rarest gemstones in the world ... which is more of a milk than a dark chocolate. More from So Expensive Meline: A pearl is one of the most complex gems to assess the ...

The fuel-injected 327-cubic-inch V8 is a very rare option in its own right, but this 1964 Corvette packs a few more rarely-seen features.

It will be unveiled to the public on April 1 as part of the “Winston Fancy Color Diamond Collection,” a group of some of the rarest and most important gems in the world, the museum said.

According to a Smithsonian statement announcing the donation, natural red diamonds are among the rarest gemstones. The Winston Red Diamond is 2.33 carats, among the largest to have the “Fancy ...

At this year's Oscars, the jewelry on the red carpet will be bold statement earrings and chunky necklaces, as well as rare natural diamonds and a more creative use of gems by male stars, according to ...