The National History Museum has added to its rich treasures, the 110-carat Cora Sun-Drop, claimed to be the world’s largest known vivid yellow pear-shape diamond. It was mined in Africa and lent to the museum by Cora International, the company that crafted the original rough diamond. The diamond gained its color from the minimal amount of nitrogen in its carbon structure making it extremely rare in nature
Massive Uncut 478-Carat Diamond | A massive 478-carat diamond was found at the Letseng Mine in Lesotho, a small kingdom in South Africa. It is the 20th largest rough diamond ever found, and it came from a mine that has already delivered three of the world's largest diamonds: the 603-carat Lesotho Promise, the 493-carat Leteng Legacy and the 601-carat Lesotho Brown. A similar but smaller-sized rough stone has recently been valued at $12 million.
Erythrite Bou Azzer, Morocco - Erythrite or red cobalt is a secondary hydrated cobalt arsenate mineral. The color is crimson to pink and occurs as a secondary coating known as cobalt bloom on cobalt arsenide minerals. Well-formed crystals are rare, with most of the mineral manifesting in crusts or small reniform aggregates. Prospectors may use it as a guide to associated cobalt and native silver.
Lucky Australian prospector strikes it rich! A massive gold nugget found near Ballarat on Wednesday by an anonymous prospector is estimated to be worth more than $300,000. See the news report at:- http://www.watoday.com.au/victoria/prospector-finds-300000-nugget-20130117-2cwax.html
koroit boulder opal with a variety of chocolate brown colors, textures and patterns of cream and bluish opal on ironstone, this one has a bit of sparkling blue and green fire, and some multicolor pinfire.