Polki — Uncut Diamonds in the Indian Tradition
Polki — Uncut Diamonds in the Indian Tradition
Minimally faceted diamond crystals set foil-backed in kundan and jadau, the older form of Indian diamond adornment
Polki refers to uncut or minimally faceted diamonds used in traditional Indian jewellery, retaining their natural crystal form with one or two flat polished surfaces rather than the geometric facet array of a modern brilliant. Polki is the older form of diamond adornment in the subcontinent and predates by centuries the spread of full faceting techniques from European cutting centres. It remains a living tradition in Indian bridal jewellery and in the work of Mughal-influenced contemporary designers.
Origin and historical context
Diamonds were mined in the Golconda region of what is now Telangana from at least the fourth century BCE, and Indian craftsmen working under Mughal patronage from the sixteenth century onward developed the polki tradition as a way of presenting the natural crystal — typically an octahedron, a flattened cube, or an irregular triangular fragment — with the minimum of polishing required to admit and return light. A single window facet, or two flat polished surfaces meeting at an edge, was often the entire extent of the cutting work. The crystal was then set face-up in a foil-backed mount, with the foil compensating for the limited light return from the unfaceted body.
The polki tradition coexisted with table-cut and rose-cut diamond traditions both in India and in Europe, and the boundaries between these categories are not sharp; a heavily worked polki diamond approaches a rose cut, while a lightly worked rose cut approaches polki. Trade usage varies, and some dealers reserve polki for the most lightly worked stones, while others apply it broadly to any pre-modern Indian diamond.
Setting — kundan and jadau
Polki diamonds are most often set by the kundan technique, in which highly refined gold strips are worked around the stone at room temperature, creating a setting without solder or prongs. The stone sits face-up in a recess lined with reflective foil — historically silver leaf, now often a metallised film — that returns light back through the diamond and compensates for the absence of pavilion faceting. The kundan-and-foil combination is the technical foundation of the jadau jewellery of Rajasthan and the Mughal courts and remains the dominant setting technique for polki today.
Quality range
Polki diamonds span a wide range of quality. The finest stones are transparent, near-colourless, and with the natural crystal form well preserved; these are the stones used in heirloom Mughal pieces and in the most exclusive contemporary work. Mid-range polki may show light tints of yellow or brown and visible inclusions but retains the structural integrity required to hold a foil-back. Lower-grade material, often used in mass-market polki jewellery, is translucent rather than transparent and may include heavily included or fractured pieces selected for surface area rather than optical performance.
In the trade
Polki retains a strong cultural and ceremonial role in Indian wedding jewellery, and the demand from the Indian and South Asian diaspora supports a substantial cutting and setting industry concentrated in Jaipur and other Rajasthani centres. International collectors and museums have also developed an interest in fine polki work, with examples appearing at major auction houses alongside Mughal antiquities. For Western consumers, polki offers a different aesthetic from the brilliant — softer, more textural, more closely tied to the original crystal — and a connection to a centuries-old continuous tradition.
Identification and disclosure
Polki is natural diamond and is graded as such for species identification, though the unconventional cutting and the foil-backed setting complicate standard clarity grading. Reputable dealers disclose the foil-backing and the polki classification at point of sale, and consumers should expect documentation that distinguishes polki from rose-cut or modern brilliant material when the stone is sold as antique or heirloom.