As a nomadic people, they weren't able to put their money into immovable property, so they put it into gold. Gold has another significance for them, however. The Wallachian Roma believe that the gold jewelry they wear acts as protection against disease. Local dialects of other languages containing Romani words , are spoken by groups of Roma who lost their own language in efforts toward assimilation. The Spanish gitanos , for example, were persecuted in the 17th and 18th centuries and punished for using Romany, so that the Calo dialects have Romany words but Spanish grammar.
Similar situations exist in Great Britain and some regions in Rumania.
These dialects are completely incomprehensible for Roma of the other dialect groups. From all these divisions, it's evident that the Roma are not and never were a homogeneous group, and therefore it would be correct to differentiate among them and not to make generalizations about them.