These cats are actually considered to be a good luck charm. In Russian folklore, the Russian Blue has long since been considered as a symbol of good luck, and the premier cat choice for many Russian Czars of legend.
The Russian Blue Cat is a cat breed that comes in colors varying from a light shimmering silver to a darker, slate grey. They develop close bonds with their owners and are sought out as pets due to their personalities, beauty and coat.
Korats have heart-shaped heads. They can easily be confused with Russian Blues. The Korat's coat is darker and the green eyes are said to have more yellow than the Russian Blue's eyes. Then there is the Chartreux - gray with gold-to-copper eye color.