Although I could get straight to the point and tell you about Persian carpets, it鈥檚 only fitting to begin with a bit of history about the Persian Empire. Cyrus the Great, who reigned from approximately 559 to 530 BCE, founded the first Persian Empire. His legacy includes the Cyrus Cylinder, often regarded as the first declaration of human rights, in which he decreed religious freedom and protection for all within his empire. Historical records indicate that the court at Pasargadae, Cyrus's capital, was adorned with exquisite carpets, reflecting the cultural sophistication of the Achaemenid era. These carpets were used not only for decoration within palaces and tombs but also as diplomatic gifts. While there鈥檚 no direct evidence linking Cyrus to the origins of carpet weaving, it is said that his reign set the stage for the development of Persian culture, including the art of carpet weaving, which has remained a symbol of Persian heritage for centuries.
The origins of carpet weaving date back over 2,500 years. The oldest known surviving carpet, the Pazyryk Carpet, was discovered in 1949 in a Scythian tomb in the Pazyryk Valley of Siberia. Housed in the Hermitage Museum in St. Petersburg, it features a central red field with detailed borders depicting deer and horsemen. Radiocarbon dating suggests that the carpet was made in the 5th century BC, but its exact origins are still debated.
Persian carpets are used as furnishings and decorative items in various settings, including homes, hotels, academic institutions, historic sites, places of worship, and museums. Their production involves a detailed process combining artistic creativity with scientific precision, particularly in the selection and treatment of materials and dyes. Creating a single carpet can take months to years and requires the work of multiple artisans, including spinners, dyers, designers, and weavers. Each carpet is made on a loom, a device that keeps the vertical threads (warp) tight and in place, allowing the horizontal threads (weft) and knots to be woven together in a precise pattern. The density of knots per square inch or centimeter is a key indicator of a carpet鈥檚 quality and intricacy. High knot density allows for more detailed and complex designs, while lower knot density results in simpler patterns.
The choice of materials is essential in determining a carpet's quality, durability, and appearance. Wool, mainly from sheep, is the most common material used in Persian carpets. The quality of wool depends on factors such as sheep breed, climate, and processing methods. Wool's properties, including its ability to absorb dye, durability, and dirt resistance, make it suitable for carpet making. Preparing wool involves washing to remove impurities, grading to sort fibers by quality, carding to align fibers, spinning to create yarn, and dyeing to add color. Different types of wool, such as 鈥渒ork鈥� wool from the sheep鈥檚 neck area, offer varying qualities; kork wool is valued for its softness and durability, which enhances the carpet鈥檚 texture.
Sometimes, wool is combined with or replaced by silk, especially in carpets of higher value. Silk adds a lustrous sheen and enables finer knotting, resulting in more elaborate designs. However, silk piles are less durable than wool, making them more suitable for other decorative uses like tapestries or pillows.
The structural integrity of Persian carpets is supported by the use of cotton for warp and weft threads. Cotton's strength and ability to maintain tension provide a stable foundation, helping the carpet stay flat and retain its shape over time. In certain villages where cotton may be less available, wool is often used for all parts of the carpet Moreover, mercerized cotton, a chemically treated cotton with increased strength and dye absorption, has been used as a substitute for silk since the late 19th century. The mercerization process, developed by John Mercer in 1844, involves treating cotton with sodium hydroxide, which enhances its durability and luster.
Dyeing is another critical aspect of the carpet-making process that involves both art and chemistry. Traditionally, natural dyes derived from spices, plants, and insects were used to achieve a rich palette of colors. For example, saffron gave yellow, madder provided red, and walnut shells produced brown. Variations in shade, known as 鈥渁brash,鈥� occur because each strand is dyed separately, resulting in subtle color differences even with the same dye mix, which makes each carpet unique.
In modern Persian rug production, synthetic dyes have largely replaced natural ones due to their consistency, broader color range, and cost-effectiveness. Synthetic dyes, especially chrome dyes developed in the 1920s, use sodium dichromate as a mordant鈥攁 substance that helps the dye bond to the fabric鈥攅nsuring long-lasting colors. Even so, some traditional weavers still use natural dyes for their unique qualities and subtle color variations.
From the ancient looms of Cyrus the Great to the vibrant, modern designs, these carpets have truly traveled through time. And while a flying carpet may remain a fantasy, a Persian rug is as close as one gets to a magical journey, blending history, artistry, and a touch of science in every weave.
Hosna Akhgary is a BSc candidate at 不良研究所, majoring in Pharmacology.
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