This beautiful carpet is from Tabriz. capital of the north eastern Iranian province of Azerbaijan, has for centuries enjoyed a great reputation as a center of Oriental culture. The vicissitudes of its history, its development from a naturally favored oasis at the foot of the volcano Sahand, to today's commercial Centre, and descriptions of its artists and craftsmen could fill many volumes. Rugs and carpets of Tabriz are Iran’s best urban products from past to present.
Dying method of material of this carpet was traditional and all dyes which used were natural dyes. Colors of natural dyes are softer and more natural looking and longer lasting than their synthetic counterparts. Sometimes natural dyes contribute to Abrash. Since all-natural dyes are not chemically or synthetically based or fixed, no two dye lots can ever be exactly the same.
Some examples of natural dyes are:
Plant Dyes: saffron, Isparuk, oak apples etc. for yellow colors; indigo for blue; madder roots (depending on age) for various red tones, as well as henna leaves and flowers, etc.
Animal Dyes: the most important of these is cochineal and in earlier times, Indian lac, both obtained from insects. A purple dye obtained from snails was Important in ancient times.
Mineral Dyes: Karaboja for black - also iron oxide; iron sulphate for brown; copper sulphate for green, etc.
In addition, however, colors will vary with the wool quality, e.g., its fat content, as well as with the chemical composition of the water which is used for preparing the dye baths.