Abstract
In this brief review the crystal dipolar surfaces and the way to stabilize them are discussed. Two classes of crystals are interested: intrinsically polar crystals and non‐polar crystals, where the polarity along some directions is the consequence of the alternating layers of positive and negative charges. I discuss the importance of taking into account the bulk symmetry of the crystal when a surface reconstruction is performed. As examples, different reconstructions of the {111} form of halite (NaCl), and the {01.2} and {00.1} forms of calcite (CaCO3) are discussed in detail.
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