The colors are usually made from wild flowers, and are rich in colors such as burgundy, navy blue, and accents of ivory. The proto-fabric is often washed in tea to soften the texture, giving it a unique quality. Depending on where the rug is made, patterns and designs vary. And some rugs, such as Gabbeh, and Gelim have a variations in their textures and number of knots as well. Out of about 2 million Iranians who work in the trade, 1.2 million are weavers producing the largest amount of hand woven artistic carpets in the world. exported $517 million worth of carpets in 2002.