A jali or jaali (jālī, meaning "net") is the term for a perforated stone or latticed screen, usually with an ornamental pattern constructed through the use of calligraphy, geometry or natural patterns. This form of architectural decoration is common in Indo-Islamic architecture and more generally in Indian architecture. It is closely related to mashrabiya in Islamic architechture.
According to Yatin Pandya, the jali allows light and air while minimizing the sun and the rain, as well as providing cooling through passive ventilation.> The holes are often nearly of the same width or smaller than the thickness of the stone, thus providing structural strength. It has been observed that humid areas like Kerala and Konkan have larger holes with overall lower opacity than compared with the dry climate regions of Gujarat and Rajasthan.
With the widespread use of glass in the late 19th century, and compactness of the residential areas in the modern India, jalis became less frequent for privacy and security matters. In the 21st century, it has gained popularity again as a low-energy building solution for the environmental footprint of energy use by buildings.
Early jali work with multiple geometric shapes was built by carving into stone, in geometric patterns, first appearing in the Alai Darwaza of 1305 at Delhi besides the Qutub Minar, while later the Mughals used very finely carved plant-based designs, as at the Taj Mahal. They also often added pietra dura inlay to the surrounds, using marble and semi-precious stones.
In the Gwalior fort, near the Urwahi gate, there is a 17 line inscription dated Samvat 1553, mentioning names of some craftsmen and their creations. One of them is Khedu, who was an expert in "Gwaliyai jhilmili" i.e. jali screen crafted in the Gwalior style. The Mughal period tomb of Muhammad Ghaus built in 1565 AD at Gwalior is remarkable for its stone jalis. Many of the Gwalior's 19th century houses used stone jalis. Jalis are used extensively in Gwalior's Usha Kiran Palace Hotel, formerly Scindia's guest house.
- Lerner 1984, pp. 156–157.
- Azmi, Feza Tabassum (20 September 2022). "How India's lattice buildings cool without air con". www.bbc.com.
- Pandya, Yatin (16 October 2011). "Yatin Pandya on 'jaali' as a traditional element". DNA India. Retrieved 1 October 2022.
- Satyaprakash Varanashi (30 January 2011). "The multi-functional jaali". The Hindu. Retrieved 18 January 2016.
- Thapar, Bindia (2004). Introduction to Indian architecture. Singapore: Tuttle Publishing. p. 81. ISBN 9781462906420.
- Hariharnivas Dvidedi, Gwalior ke Tomar, 1976, p. 378-380
- Nonperiodic Octagonal Patterns from a Jali Screen in the Mausoleum of Muhammad Ghaus in Gwalior and Their Periodic Relatives, Emil Makovicky & Nicolette M. Makovicky ,Nexus Network Journal volume 19, pages 101–120 (2017)
- JALI PANEL (INDIA), LATE 19TH CENTURY
- Pierced Window Screen (Jali) early 17th century
- Drawing ca.1882 (made)
- "ArchNet Dictionary of Islamic Architecture: Jali". archnet.org. 4 June 2003. Archived from the original on 22 December 2004.