Understanding the Difference Between Silk and Brocade

Silk

Silk is one of the finest types of fabric, traditionally worn by those of luxury and comfort. It is prized for its soft texture, elegance, and durable weave. Suitable for all climates, it provides warmth in winter and coolness in summer. Silk is mentioned in the Holy Quran as the clothing of the people of Paradise, where earthly silk pales in comparison to the unmatched softness and splendor of heavenly silk. Among the most renowned types of silk are Sindh and Istabraq—what distinguishes them?

Origin of Silk

Silk originates as a sticky liquid secreted by the silkworm larva, which wraps itself in this substance. Upon contact with air, the liquid hardens and solidifies into the well-known silk threads. Specialists then collect these threads, weaving them into various forms of silk fabric.

There are two main types of silk: the premium, natural variety known as wild silk, and cultivated silk, where farmers raise silkworms under carefully controlled conditions.

Difference Between Sindh and Istabraq

Sindh and Istabraq are among the finest silk varieties, described as garments of the inhabitants of Paradise. Sindh refers to a delicate, fine, transparent silk with a captivating sheen—soft and smooth, often worn directly against the skin. Istabraq, on the other hand, is a thick, heavy silk that is opaque and lustrous, typically worn as an outer garment over clothing. The term 'dibaj' denotes a type of woven silk. Both words, Sindh and Istabraq, have Persian origins.

How Silk Is Obtained

When a moth emerges from the cocoon, it breaks the continuous silk threads, which can extend to hundreds of meters in length. To preserve thread integrity, farmers extract the silk before the moth hatches, effectively preventing damage by terminating the pupae inside the cocoon using several methods:

• Cocoons are placed under sunlight and turned for several days.
• Cocoons are heated inside ovens.
• Cocoons are exposed to hot steam.
• Cocoons are boiled in water and then dried.

The Silkworm

Female moths lay hundreds of eggs. After about ten days, these eggs hatch into small larvae. Several weeks later, each larva secretes a sticky fluid, wrapping itself in it. Upon exposure to air, the fluid hardens into a woven silk casing known as a cocoon. Inside the cocoon, the larva remains motionless for approximately two weeks, undergoing transformation into a full-grown moth. It then tears through the silk threads of the cocoon to emerge into its new life.

Silkworms primarily feed on white mulberry leaves, which yield the highest quality and finest silk. They can also survive on leaves from other trees such as orange, lettuce, or oak, though the resulting silk is inferior in quality.