RE:clara blockchainFeb 25th - The acquisition of Clara may close prior to the expiry of the 21 day period following the filing of the material change report respecting this announcement if management of Lucara determines it to be necessary for sound business reasons.
March 2nd - ...announce that it has closed its acquisition of Clara Diamond Solutions Corp. ("Clara"), previously announced in its press release on February 26, 2018 (the "Acquisition").
Seems to have been some urgent 'sound business reasons' for the rush.