The Geological Survey of Finland carried out the mineral chemistry analysis, which found that the right geochemical conditions exist to host diamonds in the Riihivaara kimberlite.
Karelian said the new results show that the Riihivaara kimberlite sampled a part of the Earth’s mantle that has a high potential to be diamondiferous.
A 20kg sample was collected from the discovery pit, with the results obtained from a coarse size fraction between 0.5mm to 1mm.
Eclogitic garnets, including diamond indicator group one type, are abundant, making up 54% of the garnet indicator minerals.
Karelian group I eclogitic garnets tend to be related with diamonds and similarly, G10 harzburgitic garnets were also present in the sample, associated with the presence of diamonds.
Karelian Diamond Resources chairman Richard Conroy said: "The sample results are excellent. The mineral chemistry analyses carried out by the Geological Survey of Finland are very encouraging and show that the Riihivaara Kimberlite has high potential to be diamondiferous.
"The results confirm that the geochemical conditions exist for the area to host diamonds."
