Good afternoon!

Please find enclosed a news release issued this afternoon.  If you have any questions or require further information, please do not hesitate to call.

Best regards,

Sophia Shane

Ph. 604 689 7842

LUCARA Diamond PROVIDES REVISED OPERATING PERFORMANCE OUTLOOK FOR 2013

May 27, 2013 (LUC � TSX, LUC � BSE, LUC � NASDAQ OMX First North) � Lucara Diamond Corp. (�Lucara� or the �Company�) today provides a revised 2013 operating performance outlook for 2013.

William Lamb, President and CEO, commented:

�Lucara has had an exceptional start to 2013 with the recovery of large and exceptional diamonds resulting in the Company�s first large stone tender achieving gross revenues of $24.8 million and the sale of its second blue stone for $1.6 million.  Lucara continues its solid operating performance and has revised its operating cost and production guidance.  The additional cash flows from the large stone tender will result in the strengthening of the Company�s balance sheet as it expects to reduce its debt by meeting all of its debenture repayment obligations of $33.3 million by the end of the year�.

Key operational highlights are as follows:

�         Karowe Mine is projected to process 2.5 million tonnes and the Company is forecasting Diamond sales of 420,000 carats in 2013, an increase of 5% from previous guidance. The Company is forecasting revenues of around $118 million.  Five sales are planned for the remainder of the year, excluding the potential for a second large stone tender with viewings in both Gaborone and Antwerp.

�         Karowe�s operating cash costs are expected to be in the order of $23 per tonne treated, in-line with previous guidance.

�         Waste will be stripped to access ore in the Centre and South Lobes during the final half of the year, which will provide access to deeper ore benches in the North Lobe. The scheduled strip ratio for the year is 2.2 which is in line with previous expectations.

�         Capital expenditures for 2013 are expected to be approximately $5m, an increase from previous guidance of $3m, which is to fund advanced work on the Company�s tailings dam and securing the Company�s water resources through the installation of additional boreholes.

On Behalf of the Board,

William Lamb

President and CEO

Lucara�s Certified Advisor on NASDAQ OMX First North is Pareto �hman AB.

For further information, please contact:?

Sophia Shane, Corporate Development +1 (604) 689-7842

Robert Eriksson, Investor Relations, Sweden +46 701-112615

CAUTIONARY NOTE REGARDING FORWARD LOOKING STATEMENTS

Certain of the statements made and contained herein in the press release constitute forward-looking statements as defined in applicable securities laws. Generally, these forward-looking statements include any statements with respect to predictions, expectations, beliefs, plans, projects, objectives, assumptions or future events or performance and often (but not always) can be identified by the use of forward-looking terminology such as �expects�, �anticipates�, �believes�, �intends�, �estimates�, �potential�, �possible� and similar expressions, or statements that events, conditions or results �will�, �may�, �could� or �should� occur or achieved.

Forward looking statements are based on the opinions and estimates of management as of the date such statements are made, and they are subject to a number of known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievement expressed or implied by such forward-looking statements. In particular, this press release contains forward looking information pertaining to the following: the estimates of the Company�s mineral reserve and resources; estimates of the Company�s production and sales volumes for the Karowe Mine; estimated costs to construct the Karowe Mine, start-up, exploration and development plans and objectives, production costs, exploration and development expenditures and reclamation costs; expectation of Diamond price and changes to foreign currency exchange rate; expectations regarding the need to raise capital;

The Company believes that expectations reflected in this forward-looking information are reasonable but no assurance can be given that these expectations will prove to be correct.  Forward-looking statements are subject to a variety of known and unknown risks, uncertainties and other factors that could cause actual events or results to materially differ from those reflected in the forward-looking statements including, without limitation, the following risks and uncertainties for the Company: general global financial and economic conditions; future market prices for diamonds; the supply and demand for rough diamonds; ability to access capital; fluctuations in interest rates and foreign currency exchange rates; inherent hazards and risks associated with mining operations; estimations of the Company�s production and sales volume for the Karowe Mine; costs associated with the construction of the Karowe mine; operational costs, including costs of power and diesel; operational difficulties, including failure of plant, equipment or processes to operate in accordance with specifications or expectations; industrial job disturbances; environmental and other regulatory requirements, including changes in the same; the acts of the governments of the jurisdictions in which the Company�s operations are located; obtaining governmental approvals and permits; estimation of mineral resources, including the continuity of grade of diamondiferous mineralization; risks related to property titles; the dependence on transportation facilities and infrastructure; the Company is required to carry uninsurable risks; the mining industry is competitive; risks associated with current and future legal proceedings; conflicts of interest; dependence on management and technical personnel; and risks associated with volatility in the securities market.

Certain of these risks are discussed under the heading �Risk Factors� in the Company�s Annual Information Form dated March 22, 2012 available at http://www.sedar.com. This list is not exhaustive of the factors that may affect any of the Company�s forward-looking statements. Forward-looking statements are statements about the future and are inherently uncertain, and actual achievements of the Company or other future events or conditions may differ materially from those reflected in the forward looking statements due to these risks, uncertainties and other factors. Accordingly, readers are cautioned not to place undue reliance on these forward-looking statements.  The Company disclaims any intention or obligation to update or revise forward-looking statements if circumstances or management�s beliefs, expectations, or opinions should change, except as required by law.