Abstract
Based on the data obtained during the study of a representative collection of diamonds of the Ebelah placer by morphological analysis, luminescence, IR and EPR methods, a scheme for dividing crystals into three groups, presumably related to the primary sources of diamonds, is proposed. The separation is based on the statistical distribution of diamonds in the collection according to the content of A (IR) centers; the validity of the allocation of three groups is confirmed by the revealed differences in crystals of these groups in a significant part of typomorphic features, including habitus, surface morphology, color, visual luminescence, the presence of twins and accretions, the degree of mechanical wear, etc.
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