Silk has a long history co-walker with humane civilization. It was discovered in furth millennium BC by Chinese people and then use as a luxury product during history. The oldest hand-knotted pure silk carpet which weaved in Kashan, Iran, belongs to the 16th century and was kept in Calouste Gulbenkian Museum, Lisbon, Portugal. As the silk carpet produced in many countries in today world, the most developed countries are major importers of this luxury and best-preserved carpet worldwide. According to International Trade Center, United States of America, Germany, United Kingdom, Japan, and Canada were 5 top importers of hand-knotted pure silk carpet in the world. As official statistics show, the United States imported 41.3% of world total silk hand-woven carpet in 2021. Germany was another key importer of silk hand-made carpet, which imported about 7.7% of world imported total. United Kingdom, Japan, and Canada were in the next rates by importing 6.1%, 3.8%, and 3.2% respectively. 
To conclude, pure silk hand-knotted carpets and rugs are still a luxury products, which commonly used by upper-class people, thus, the importers of the products are mostly rich and most-developed countries in the world. these products are symbol of richness and fineness.
Raw silk carpet
Raw silk carpet is kind of carpet that is mostly weaved of natural silk with no additional colours. For better knowing raw silk carpet, its necessary to explain the processes by which silk thread is produced. Natural silk is obtained from cocoons of silkworms in a very complicated process. By unwinding silk threads from the cocoons in the last stage, raw silk is ready to use in carpet or other textile products. In this stage, if the silk threads used without adding natural or chemical colors, the carpet named 'Raw silk carpet'. Summarizing, Raw silk carpet is produced by using natural silk without adding natural of industrial coloring substances.
Secondhand silk carpets
Interestingly, the more silk carpets are used, the more valuable they become. Therefor secondhand silk carpets are most valuable than newly fabricated products. There are many reasons why the secondhand silk carpets are more valuable, in some cases more expensive, than new carpets. The first reason why secondhand silk carpet is more valuable is that the more it used and treaded, the more become glare, shine and bright. 
Furthermore, from the artistic perspective, silk hand-knotted carpets are artworks and become more valuable during the time. As a result, secondhand silk carpets become more treasured and valuable-in some cases even more expensive- when they become old-age and ancient. This type of carpet is more a magnificent treasure than a floor covering textile.
Hand-knotted silk and wool rugs
Wool and silk have a long history and mostly used in textile floor coverings and clothes. Despite both silk and woolen rugs are made of natural materials, they are not comparable with each other according to quality, glare, softness, beauty, and price. Silk carpet is very expensive than woolen one, in some cases, its price is 10 to 15 times higher than woolen carpet. Moreover, silk carpet is very soft, smooth, and thin, while woolen carpet is very thick, coarse, and uncomfortable. Finally, the appearance of the two carpet is not the same; silk carpet is very glare, beautiful and suitable for decoration. Thus, silk hand-knotted carpet is more popular than woolen one.
Kashmir silk rugs for sale
As part of Indian peninsula, Kashmir carpet industry, historically, originated in Persian carpets and rugs, but recently its silk rugs provided worldwide for sale and its market has been growing significantly. the first reason that Kashmir silk rugs were bestseller globally, is related to its reasonable price. As the price of silk and other materials in Iran increased in recent years, Kashmiri silk rugs' price is moderate and reasonable. In addition, as banking ties between Iran and western countries severed due to imposing heavy sanctions on the country, export of carpet from Iran to other countries severely damaged. Persian world-famous carpets gradually replaced by Kashmir, Indian or Turkish rugs. Finally, as India has been rising economically in recent years, it hugely investigates on carpet industry. Thus, the export of Indian Kashmir's carpet has been growing noticeably. To sum up, export of Persian carpets has declined in recent years, as a result, Kashmir silk rugs exports are going up worldwide.
Synthetic silk carpet
As pure silk carpet is symbol of richness and fineness, producing of synthetic silk carpet in large scale by carpet machine-weavers and hand weavers, has been growing for several reasons. In synthetic silk carpet, silk is used both with natural materials (wool) and industrial materials (polyester, acrylic, and nylon). in woolen carpet, silk is used to moderate its thickness and become relatively smooth, soft, and comfortable. 
The price of this synthetic silk rugs, which made by mixture of silk and wool, is reasonable and moderate. In recently produced high quality machine-woven carpets, silk is usually sued to add more beauty and glare to the carpet. For instance, in 1500 reeds machine-woven carpet with embossed flower pattern, silk is used in embossed part of pattern, which multiple the beauty of carpet. Overall, silk is used with other materials to produce a more beautiful and smooth carpets with moderate and reasonable prices.
Pure silk Turkish rugs
Turkey is one of important member of "Carpet Belt" countries and the key carpet exporter in today world. According to International Trade Center, Turkey was in the second place by a small difference -after China- in exporting carpet and other textile floor coverings. But regarding to pure silk rugs, Turkish products are inferior to their Indian, Egyptian, and Persian counterparts. Namely, regarding to export of silk rugs, Turkey was in the seventh place in the world by exporting only 4.8% of world total. According to official statistics in 2021, Turkish silk carpet export was only 47,627 USD and has decreased 4 percent during last four years. Compared to world-famous Persian, Egyptian or even Indian silk carpets, Turkish silk rugs have less fame globally. Summarizing, despite the declining of Persian rugs’ export in recent years, Turkish pure silk rugs are far behind, in the seventh place among the major exporters of the products worldwide.