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The main indigenous industrial sources of diamonds are kimberlites and lamproites – alkaline-ultrabasic rocks of ancient platforms, forming mainly tube-shaped bodies, dikes and veins. ...

We continue the cycle of significant days and people in gemology and mineralogy ...

We are starting a new cycle of publications about great researchers in the field of gemology and mineralogy. ...

From an inexperienced point of view, it may seem that the central part of the East European platform, namely the region of the Moscow region, is deprived of gems. ...

The stone, later called "dianite", macroscopically is a dense rock of cryptocrystalline structure, characterized by bluish-gray and blue colors. ...