Karelian Diamond Resources plc announced Lahtojoki South ore exploration permit, granted in January 2018, has become legally valid. As a result the Company can now carry out its exploration plans for the permit area. The Lahtojoki South exploration permit, which covers 28.8 hectares, is of particular interest to Karelian Diamonds as it is situated close to the Lahtojoki diamond deposit, in the Kaavi region of Finland, over which the Company has a mining concession. Kimberlites are known to occur in clusters. The exploration permit granted includes the area in which kimberlite boulders were discovered, to the south west of the Lahtojoki diamond deposit, and extends over 400m up-ice from the boulder discovery site. The nature of the boulder material shows that it is not derived from the Lahtojoki kimberlite (a diatreme filled with tuffisitic or tuffisitic breccia kimberlite). This suggests, along with their location, that the boulders are from an undiscovered kimberlite up ice from their initial discovery site. The company commissioned a Preliminary Economic Assessment on the Lahtojoki Diamond deposit which highlighted the economic viability of the deposit.