Ms. Jacqueline Allison reports

DOMINION DIAMOND'S FISCAL 2018 FIRST QUARTER RESULTS TO BE RELEASED MONDAY, JUNE 12, 2017

Dominion Diamond Corp. will release its fiscal 2018 first quarter results for the period ended April 30, 2017, after market hours on Monday, June 12, 2017.

Beginning at 11 a.m. ET on Tuesday, June 13, 2017, the company will host a conference call for analysts, investors and other interested parties. Listeners may access a live broadcast of the conference call on the company's website or by dialling 844-249-9383 within North America or 270-823-1531 from international locations and entering the conference ID 13700907.

An on-line archive of the broadcast will be available by accessing the company's website. A telephone replay of the call will be available two hours after the call through 2 p.m. ET on Tuesday, June 27, 2017, by dialling 855-859-2056 within North America or 404-537-3406 from international locations and entering the conference ID 13700907.