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Lucara achieves US$ 32.48 Million for Exceptional Stone Tender 12

Corporate Updates

NEWS RELEASE

Lucara achieves US$ 32.48 Million for Exceptional Stone Tender 12

June 19, 2018 (LUC – TSX, LUC – BSE, LUC – Nasdaq Stockholm) Lucara Diamond Corp. (“Lucara” or the “Company”)

is pleased to announce the results from its 12 th Exceptional Stone Tender (“EST”). The tender consisted of 10 single

stone lots, ranging from 472.37 to 40.4 carats in size, totaling 1,453.06 carats, included two diamonds greater than

300 carats, and achieved gross revenues of US$ 32.48 Million (US$ 22,356 per carat). The 327.48 carat diamond sold

for US$ 10.1 Million (US$ 30,900/ct).

Highlights

 All 10 tendered diamonds sold for more than US$ 1.0 Million each

 Lot number 1201, the 327.48 carat diamond sold for US$ 10.1 Million

 4 diamonds sold for in excess of US$ 3 Million each

 The average price per carat, excluding the 472.37 carat top light brown diamond, was US$ 30,712/ct

Eira Thomas CEO, stated, “Lucara is very pleased with the outcome of EST12, which was comprised of diamonds

produced during 2018, including several diamonds recovered from the EM/PK(S) unit during February and April of this

year. The quality of Karowe’s large diamonds continues to attract the attention of the World’s foremost manufacturers

and diamantaires with 29 companies attending the sale and 8 individual companies winning lots. All ten diamonds sold

for more than $1 Million each and the 327.48 carat diamond sold for US$ 10.1 Million (US$ 30,900/ct) .”

Lucara has now sold 168 diamonds for in excess of US$ 1 Million and 10 single diamonds have been sold for greater

than US$ 10 Million. The EST achieved a price in excess of US$ 22,356 per carat, continuing the production of large

high quality diamonds sourced from the South Lobe of the AK06 kimberlite. The average price per carat for Karowe

diamonds sold year to date is US$ 893.3/ct.

On behalf of the Board,

Eira Thomas

President and Chief Executive Officer

Lucara Diamond on Facebook: https://www.facebook.com/LucaraDiamond/

Lucara Diamond on Twitter: https://twitter.com/LucaraDiamond

Lucara Diamond on LinkedIn: https://www.linkedin.com/company/lucara-diamond-corp-

Lucara Diamond on Google+: https://plus.google.com/+LucaradiamondCorporation

Lucara Diamond on Instagram: https://www.instagram.com/lucaradiamond/

For further information, please contact:

Investor and Public Relations +1 (604) 689-7842, [email protected]

Sweden: Robert Eriksson, Investor Relations +46 701-112615, [email protected]

UK: Louise Mason, Citigate Dewe Rogerson +44 (0)20 7282 2932 [email protected]

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ABOUT LUCARA

Lucara is a leading independent producer of large exceptional quality Type IIa diamonds from its 100% owned

Karowe Mine in Botswana. The Company has an experienced board and management team with extensive diamond

development and operations expertise. The Company operates transparently and in accordance with international

best practices in the areas of sustainability, health and safety, environment and community relations.

ABOUT CLARA

Clara Diamond Solutions (Clara), wholly owned by Lucara Diamond Corp, is a secure, digital sales platform that uses

proprietary analytics together with cloud and blockchain technologies to modernize the existing diamond supply

chain, driving efficiencies, unlocking value and ensuring diamond provenance from mine to finger.

The information in this release is accurate at the time of distribution but may be superseded or qualified by

subsequent news releases.

This information is information the Company is obliged to make public pursuant to the EU Market Abuse Regulation.

The information was submitted for publication, through the agency of the contact persons set out above, on June

19, 2018 at 4:00 p.m. Pacific Time through the contact persons set out above.