The advent of complex systems including magnetic channel and TEM airborne survey channel in the first years of 21st century got a huge step forward in kimberlite industry. But up to the present day in many prospective areas only magnetic survey is used for kimberlite exploration on a mass scale. In case of complex surveys with magnetic and transient electromagnetic channels specialists often consider magnetic survey as the main exploration method for data interpretation, pipe anomaly isolation and their rating according to the degree of prospectivity. While electromagnetic survey is considered to be a supplementary method for sorting and classification of magnetic anomalies. In our opinion, this approach is fundamentally wrong and leads to serious negative consequences, decreasing the effectiveness of kimberlite exploration. Let us validate this conclusion by the example of diamond exploration works that have been performed in Angola over the last decade. It is a known fact that through the last years Angola has been the leader both in the number of kimberlite bodies discovered annually and in rough diamond reserves increment, despite of rather meager budget of diamond exploration works.