Lucara Corporate Update

NEWS RELEASE

LUCARA CORPORATE UPDATE

September 4, 2013 (LUC – TSX, LUC – BSE, LUC – NASDAQ OMX First North) … Lucara Diamond Corp. (“Lucara” or the “Company”) announces that, it has granted 150,000 incentive stock options to an officer of the Company. The options are exercisable, subject to vesting provisions, over a period of three years at a price of $0.99 per share.

About Lucara

Lucara is a well positioned new diamond producer. The Company has an experienced board and management team with extensive diamond development and operations expertise. The Company’s two key assets are the Karowe Mine in Botswana and the Mothae Project in Lesotho. The 100% owned Karowe Mine is in production. The 75% owned Mothae Project has completed its trial mining program.

On Behalf of the Board,

William Lamb President and CEO

Lucara’s Certified Advisor on NASDAQ OMX First North is Pareto Securities AB.

For further information, please contact:

Sophia Shane, Corporate Development +1 (604) 689-7842 Robert Eriksson, Investor Relations, Sweden +46 701-112615