It was carefully regulated , expensive and marked by a special seal , and this colour was called sealed Sinope .
In classical antiquity , the finest red ochre came from a Greek colony on the Black Sea where the modern city of Sinop in Turkey is located .
It was carefully regulated , expensive and marked by a special seal , and this colour was called sealed Sinop .
In classical antiquity , the finest red ochre came from a Greek colony on the Black Sea where the modern city of Sinop in Turkey is located .