This pattern has its name from the city of Herat in Northwestern Afghanistan. It is a common pattern found mainly on handmade carpets from Iran. It comprises of a flower inside a rhomb surrounded by four acanthus-leaves. These leafs are sometimes called fishes, because of its similarity, and the pattern is often used on carpets with an all-over/repeated motif. [ref:http://www.carpetencyclopedia.com]
Placing the correct size rug in your space is as important as choosing the right color or pattern. A rug that it is too small will shift the balance of the room unfavorably. A rug that is too big, especially in open floor plans, may put the area designations off. There are a few rules of thumb, but a picture says it better. Use these handy guides by Interior Designer Lisa Ferguson to make the best choice.