Whether or not they've bred their Russian Blues with other breeds (they must disclose this and it would make it not a purebred lien. The one name that basically stayed with these cat was the Maltese and it held right until the early l900’s. In 1875 a Russian Blue https://russian-blue-adoption68580.kylieblog.com/35571152/not-known-factual-statements-about-russian-blue-cats-for-sale