Jalal ud-Din Muhammad Akbar (r. 1556–1605), the third and arguably greatest of the Mughal emperors, presided over a court whose appetite for gemstones was without parallel in the early modern world. Akbar's treasury — the toshakhana — held thousands of cut and uncut stones acquired through conquest, tribute, diplomatic gift, and the systematic patronage of gem merchants travelling the overland and maritime routes between Persia, Central Asia, the Indian subcontinent, and, from the 1560s onward, Portuguese-controlled Goa. The stones that passed through Akbar's hands were not merely ornamental: they functioned as portable wealth, political currency, talismanic objects, and the material embodiment of imperial legitimacy. Understanding the gemstones of Akbar's reign requires equal attention to the historical record — principally the Ain-i-Akbari compiled by his court historian Abu'l-Fazl — and to the gemmological properties of the stones themselves.

Primary Sources and the Ain-i-Akbari

The most detailed contemporary account of Akbar's gemstones survives in the Ain-i-Akbari ("Institutes of Akbar"), the third volume of Abu'l-Fazl's encyclopaedic chronicle Akbarnama, completed around 1598. Abu'l-Fazl devoted an entire section to the imperial jewel-house, describing the classification, grading, and valuation of rubies, spinels, emeralds, diamonds, and pearls with a precision that reflects a genuine gemmological tradition at the Mughal court. He distinguishes, for example, between stones of Badakhshan origin (the celebrated spinels then universally called rubies in the Persian and Mughal world), stones from Burma (the Mogok valley), and stones from the newly opened Colombian emerald mines. The Ain-i-Akbari also records that Akbar maintained specialist gem-cutters, polishers, and engravers — craftsmen who inscribed stones with Quranic verses, imperial titles, and auspicious dates, a practice that has allowed several surviving stones to be traced to the Mughal period with reasonable confidence.

Rubies and Spinels: The Imperial Red Stone

In the Mughal gemological vocabulary, the Persian word yaqut (ruby) encompassed both true corundum rubies and the magnesium aluminium oxide spinels from the Kuh-i-Lal mines of Badakhshan (in present-day Tajikistan and Afghanistan). These spinels, now known to gemmologists as Balas rubies — a name derived from the medieval Latin balascus, itself from Balascia, the Latinised form of Badakhshan — were among the most prized stones in the Islamic world for centuries before Akbar's reign. Their vivid red to pinkish-red colour, high transparency, and the extraordinary sizes in which they could be found made them the preferred red stone for royal use across Persia, the Ottoman Empire, and Mughal India alike.

Akbar received spinels as tribute from the rulers of Badakhshan, and several large engraved spinels that survive in European collections bear inscriptions recording ownership by Mughal emperors. The most celebrated of these — the so-called "Timur Ruby," now in the British Royal Collection — carries inscriptions of six rulers including Akbar's successor Jahangir and later Mughal emperors, though it does not bear Akbar's own name. Its provenance nevertheless illustrates the continuity of the Mughal spinel tradition that Akbar consolidated. True corundum rubies from the Mogok valley in Burma also entered the toshakhana; Abu'l-Fazl records that Burmese rubies of the finest quality — what later centuries would call pigeon-blood red — commanded the highest prices among red stones, though the largest and most spectacular pieces in the imperial collection were almost invariably spinels.

Diamonds: The Stones of Golconda

Akbar's reign coincided with the full flowering of the Golconda diamond trade. The alluvial diamond deposits of the Krishna and Godavari river systems in the Deccan — controlled in Akbar's time by the Sultanates of Bijapur, Golconda, and Ahmadnagar — produced stones of exceptional quality characterised by their high transparency and, in the finest examples, a faint bluish or steely fluorescence that later became associated with the "Golconda" descriptor used by modern laboratories and auction houses. Akbar's military campaigns into the Deccan brought him into contact with these sources, and tribute and conquest yielded significant diamonds to the imperial treasury.

The Ain-i-Akbari records that Akbar graded diamonds by colour, clarity, and weight, using a system of tolas and mashas for weighing. Abu'l-Fazl notes that colourless stones of perfect transparency were the most valued, followed by those with a slight rose or yellow tint, and that heavily included or off-colour stones were considered inauspicious. The famous Koh-i-Noor diamond, whose early provenance is contested, is associated by some historical accounts with the Kakatiya dynasty and subsequently with the Lodi Sultans; whether it entered the Mughal treasury under Babur (Akbar's grandfather, who recorded receiving a great diamond after the First Battle of Panipat in 1526) or later remains a subject of scholarly debate. What is well-documented is that by Akbar's reign the Mughal court possessed multiple large diamonds of Golconda origin, and that the tradition of inscribing diamonds — less common than spinel engraving owing to the hardness of the material — was practised by Mughal lapidaries.

Emeralds: The New World Stone at a Mughal Court

Perhaps the most historically remarkable aspect of Akbar's gem collection is the speed with which Colombian emeralds penetrated the Mughal market. Spanish conquistadors reached the emerald mines of Muzo and Chivor in present-day Colombia in the 1530s and 1540s; within a generation, Colombian emeralds were flowing eastward through Lisbon, Seville, Goa, and the overland Persian trade routes to reach the courts of the Ottoman Sultan, the Safavid Shah, and the Mughal Emperor. Akbar's court was receiving Colombian emeralds by at least the 1570s, and the Ain-i-Akbari describes emeralds (zumurrud) of exceptional size and colour in the imperial collection.

The gemmological distinction between Colombian emeralds and the older sources — principally the Cleopatra mines of Egypt (Wadi Sikait) and the deposits of the Swat valley in what is now Pakistan — would not be made scientifically until the twentieth century, when fluid-inclusion analysis and trace-element fingerprinting allowed origin determination. At Akbar's court, Colombian stones were valued for their superior colour saturation and larger crystal sizes rather than their geographic origin, which was in any case imperfectly understood. Many of the large carved and engraved Mughal emeralds that survive in museum and private collections — including the famous "Mogul Mughal Emerald" of 217.80 carats sold at Christie's in 2001 — date to the seventeenth century, but the tradition of acquiring, engraving, and treasuring Colombian emeralds was firmly established in Akbar's reign.

Pearls and Other Stones

Alongside the four principal precious stones, Akbar's treasury held substantial quantities of pearls from the Persian Gulf fisheries (particularly the Bahrain and Hormuz banks), as well as turquoise from the Nishapur mines of Khorasan, cat's-eye chrysoberyl, yellow sapphires, and a variety of coloured stones used in kundan jewellery settings — the traditional Indian technique of setting stones in pure gold foil without the use of prongs or bezels in the conventional sense. The Ain-i-Akbari also mentions lapis lazuli, coral, and garnets among the stones held in the imperial stores, though these were ranked below the principal precious stones in both monetary and symbolic value.

Gemstones as Political Instruments

At the Mughal court, gemstones functioned within an elaborate system of gift exchange and political obligation. The ceremony of peshkash — the presentation of tribute gifts to the emperor — invariably included gemstones, and Akbar's court records document the receipt of rubies, spinels, emeralds, and diamonds from vassal rulers, Persian ambassadors, and Portuguese traders seeking commercial privileges. Conversely, Akbar distributed gems as marks of imperial favour: a ruby or a large pearl presented by the emperor to a nobleman was a public statement of rank and royal approval. European visitors to the court, including the Jesuit missionaries who arrived at Akbar's invitation in 1580, recorded their astonishment at the quantity and quality of stones on display during imperial audiences and festivals.

The practice of inscribing stones with the emperor's name, titles, and regnal year served a dual purpose: it personalised the stone as an imperial possession and simultaneously created a permanent record of ownership that could survive the stone's transfer through conquest or inheritance. Several inscribed spinels and emeralds bearing Mughal imperial inscriptions from the sixteenth and seventeenth centuries are held in the collections of the Victoria and Albert Museum in London, the Al-Sabah Collection in Kuwait, and the Nasser D. Khalili Collection, providing tangible gemmological evidence of the tradition Akbar helped to establish.

Gemmological Grading at the Mughal Court

The Ain-i-Akbari reveals a sophisticated system of gem grading that anticipates in several respects the criteria formalised by modern gemmological laboratories. Abu'l-Fazl describes rubies (including spinels) as being graded first by colour — the most prized being a pure, vivid red without secondary hues — then by clarity (freedom from inclusions, fractures, and surface blemishes), then by cut quality (the symmetry and polish of the fashioned stone), and finally by weight. This four-factor approach corresponds closely to the modern "four Cs" framework, though the Mughal system predates the GIA's formalisation of that framework by more than three and a half centuries. Diamonds were similarly assessed for colour, clarity, and weight, with particular attention paid to the presence of internal flaws considered inauspicious by astrological tradition.

The Mughal court also maintained what might be described as a provenance premium: stones from known prestigious sources — Badakhshan spinels, Burmese rubies, Golconda diamonds — commanded higher prices than chemically identical stones from lesser-known origins, a principle that remains fundamental to the modern coloured-stone market and is reflected in the origin reports issued by laboratories such as Gübelin, SSEF, and Lotus Gemology today.

Legacy and Surviving Material

The dispersal of the Mughal imperial treasury occurred gradually over the seventeenth and eighteenth centuries, accelerating dramatically after Nadir Shah's sack of Delhi in 1739, which transferred enormous quantities of Mughal gems — including the Koh-i-Noor, the Timur Ruby spinel, and the Peacock Throne — to Persia. Further dispersal followed the decline of the Mughal Empire through the eighteenth century and the events of 1857–58. Stones from the Mughal treasury entered the collections of the British Crown, the Iranian Crown Jewels, the Ottoman treasury, and the hands of private collectors and dealers across Europe and Asia.

The identification of stones as having passed through Akbar's treasury specifically — as opposed to those of his successors Jahangir, Shah Jahan, or Aurangzeb — depends almost entirely on inscribed specimens or on documentary evidence in the Akbarnama and related chronicles. The absence of Akbar's name from many inscribed Mughal stones reflects both the convention of inscribing stones at the moment of acquisition or recutting (which often occurred under later emperors) and the likelihood that many of Akbar's finest stones were recut, re-engraved, or melted into later jewellery settings. Nevertheless, the gemmological and historical record is sufficient to establish that Akbar's court represented one of the greatest concentrations of fine gemstones in recorded history, and that the aesthetic and commercial standards he helped to establish shaped the Mughal gem tradition that continued for more than a century after his death.

Further Reading

• GIA Gems & Gemology — Mughal Emeralds
• GIA Gems & Gemology — Golconda Diamonds
• GIA Gems & Gemology — Spinel: The Great Impostor