Yamana Gold (TSX:YRI) announced that net earnings increased 15% to $170 million, $0.23 per share in first quarter of 2012.

Allana Potash (TSX:AAA) surged 9.8% on Tuesday on higher than usual trading volumes, after upping the resource at its Danakhil project by 90%.

Japan and India have reached a basic agreement to jointly develop rare earths, used in the production of several high-tech goods from weapons to cell phones, and supply Tokyo with about 14% of its rare earth needs.

Blaming severe weakness in U.S. thermal coal markets, Arch Coal, Inc. (NYSE: ACI) today reported first quarter 2012 net income of $1.2 million, or $0.01 per diluted share, compared with net income of $55.6 million, or $0.34 per diluted share, in the prior-year period.

Bella Ideale Diamonds, a company that sells jewellery and provides strategies for diamond investing, claims that certain high quality diamonds exceed investment returns of traditional investments and are second only to gold in price appreciation over the past 10 years.

The Globe and Mail notes that rules for the second environmental review of Taseko Mine’s Prosperity project has been tightened up, and […]

Birks, one of Canada's main manufacturers and retailers of fine jewellery since 1879, is bringing the largest collection of yellow diamonds ever to be exhibited in the jeweller's history to its Toronto location. A collection of pieces worth $10 million will be showcased at Birks on Bloor from May 2 to 6, 2012.

The latest figures by Kimberley Process Certification Scheme (KPCS), international diamond regulators on the global diamond production, have set the alarm bells ringing in the world's biggest diamond cutting and polishing centre in Surat, India.

Canadian junior Shear Diamonds Ltd. (TSX VENTURE:SRM) announced today it’s begun processing diamonds from the stockpiles at its Jericho diamond mine in Nunavut, Canada.