The Green Booty of Conquest: Chrome Tourmaline and Royal Plunder in History

The Green Stones of Kings and Conquerors

For millennia, the deep green glow of certain gemstones has carried an almost magnetic allure for monarchs and warlords. Among the most coveted were the vivid green tourmalines from the remote pegmatites of Brazil, Afghanistan, and Madagascar—stones that modern gemology classifies as chrome tourmaline for their intense, chromium-induced color. But the path of these stones from mine to crown was rarely peaceful. In the annals of royal history, green gems were often less symbols of divine favor and more the spoils of war, seized in sackings, demanded as tribute, or reworked by conquering dynasties to legitimize their rule. This article explores the tangled history of chrome tourmaline as war plunder, tracing how conquest, looting, and imperial ambition transformed these stones into royal heirlooms and symbols of supremacy.

A Gemstone with Many Names: The Historical Identity of Chrome Tourmaline

Before delving into royal plunder, one must confront a fundamental challenge: historical records rarely mention 'chrome tourmaline' by name. The mineral species tourmaline, with its complex borosilicate chemistry, was only formally recognized in the nineteenth century by Western science. Ancient and medieval texts described green gemstones using terms that could denote emerald, peridot, green sapphire, or even green glass. The Greek 'smaragdos' and the Latin 'smaragdus' were generic terms for any green stone, often applied to what we now identify as emerald, but possibly also to green tourmaline, peridot, or even malachite. This ambiguity means that when a royal inventory from antiquity lists a 'smaragdus,' we cannot assume it was a chrome tourmaline.

The modern variety name 'chrome tourmaline' refers specifically to tourmaline colored green by chromium (and sometimes vanadium), producing a rich, emerald-like hue. Unlike the more common green tourmaline colored by iron, chrome tourmaline is rare and highly prized. Its historical identification is further complicated by the fact that many named sources, such as the legendary Cleopatra's Mines in Egypt, produced emerald, not tourmaline. However, other ancient sources may have included tourmaline. For example, the Roman writer Pliny the Elder, in his Natural History, described green stones from various regions, but he did not distinguish among them mineralogically.

Despite these uncertainties, there is strong evidence that green tourmaline was known in the ancient world, primarily through trade routes that connected mines in Central Asia and Africa with Mediterranean and Indian markets. The famous 'Carmel sapphire' or other biblical gems, for instance, have been speculated by some modern researchers to be tourmaline, though this remains speculative. What is certain is that by the time of the Mughal Empire in India, tourmaline—known as 'lal' or 'sabz'—was carved and set in royal jewelry, and by the eighteenth century, tourmalines from Brazil were flooding European markets, often confused with emeralds. This confusion persisted until chemical analysis in the nineteenth century clarified the species.

Conquest and Gem Seizure in the Ancient World

The plundering of gemstones in war is as old as warfare itself. In the ancient Near East, Assyrian kings boasted of carrying away the treasures of conquered cities, including precious stones. The royal annals of Ashurbanipal mention the looting of the treasures of Elam, which included 'precious stones' from the temples and palaces of Susa. While we cannot know if chrome tourmaline was among them, green stones were certainly part of the booty. The Elamites themselves had long imported lapis lazuli, carnelian, and possibly green stones from Central Asia via overland trade routes.

When Alexander the Great swept through Persia and into India in the fourth century BCE, his army's loot included enormous quantities of gold, silver, and jewels. Historians report that Alexander sent treasures back to Greece, and his successor's courts became centers of luxury. Among the gems that likely moved through this conquest were green stones from India, which may have included tourmaline from what is now Sri Lanka or Afghanistan. However, no specific artifact has been conclusively identified as a tourmaline from Alexander's campaigns.

The Roman Empire was also a voracious collector of conquered luxury. Roman generals staged triumphs displaying gold, silver, and gem-studded objects taken from Carthage, Greece, Egypt, and Parthia. The emperor Nero was said to have owned a vast collection of gems, some of which may have been green stones from distant lands. Yet, again, the identification of these stones is uncertain. What matters for our story is the pattern: green gemstones, whatever their species, were treated as high-value spoils, often reset or recut to suit the tastes of the conqueror.

The Mughal and Ottoman Empires: Green Stones in Imperial Treasuries

The Mughal emperors of India were among the most avid gem collectors in history, and their conquests and diplomatic exchanges brought an extraordinary array of colored stones into their treasury. The Mughals particularly favored emeralds from Colombia, which arrived via Portuguese and Dutch trade, but they also prized local gemstones, including tourmaline, which was mined in various parts of the subcontinent.

A key figure in this narrative is Babur, the founder of the Mughal dynasty, who in the sixteenth century defeated the Lodi sultanate and captured the city of Delhi. According to his memoirs, the Baburnama, the invaders seized immense treasure from the Afghan rulers, including gold, silver, and 'jewels' of various kinds. While specific types of gems are not detailed, it is plausible that tourmaline was among the stones taken, since tourmaline was known in Afghanistan and India.

Later Mughal emperors, especially Akbar, Jahangir, and Shah Jahan, built enormous treasuries that included entire vaults of precious stones. The French traveler Jean-Baptiste Tavernier, who visited India in the seventeenth century, described the imperial treasury as containing vast quantities of diamonds, rubies, emeralds, and other gems, some of which had been acquired through military campaigns. Tavernier noted that the Mughals often recut larger stones to suit their aesthetic, which meant that many historic gems lost their original cuts.

In the Ottoman Empire, similar patterns of conquest and plunder prevailed. The Ottoman sultans, expanding into the Balkans, the Middle East, and North Africa, seized the treasuries of defeated dynasties. The Topkapi Palace treasury in Istanbul, now a museum, houses an extraordinary collection of jewels, including the famous Topkapi Dagger, which features large emeralds, and many other gem-studded objects. Some of these may include tourmaline, though the identification of many stones in the collection is still being studied. The Ottomans, like the Mughals, saw gemstones as both wealth and symbols of imperial power, and they often commissioned skilled artisans to incorporate captured stones into new regalia.

The Spanish Conquest of the Inca and the Green Stones of South America

While the Spanish conquistadors are infamous for looting gold and silver from the Andes, they also took gemstones. When Francisco Pizarro captured the Inca emperor Atahualpa in the sixteenth century, he ransomed the king for a room filled with gold and two with silver, but precious stones were also part of the treasure. The Inca themselves highly valued greenstones, particularly emeralds from the Esmeraldas region in present-day Colombia, which they often carved and traded. It is possible that some stones labeled as emeralds were in fact green tourmaline, as tourmaline deposits were later discovered in Brazil, but the Andes did not produce significant tourmaline in pre-Columbian times.

The Spanish sent enormous quantities of emeralds back to Europe, where they became objects of fascination. The famous 'Muzo' mine in Colombia was a major source, and the gems were often recut into European styles. However, gemological analysis of some museum pieces labeled 'emeralds' has occasionally revealed the presence of tourmaline, indicating that confusion existed even among gem experts of the past.

From War Booty to Diplomatic Gift: The Aftermath of Plunder

Not all gem plunder remained in the hands of the conqueror. Some stones were given as diplomatic gifts, others were sold to finance wars, and still others were offered as ransom. For example, in the seventeenth century, when the Mughal Empire was weakened by internal conflicts, the Persian ruler Nader Shah invaded India and sacked Delhi, carrying away the Peacock Throne and countless gems, including the famous Koh-i-Noor diamond and other stones. While the Koh-i-Noor is a diamond, other green stones from the Mughal treasury may have been tourmaline. This episode illustrates how a single conquest could redistribute the accumulated wealth of a dynasty across the world.

In Europe, the aftermath of the Napoleonic Wars saw the dispersion of many royal gem collections. The French Crown Jewels, some of which had been plundered from various kingdoms, were sold by the Third Republic in the nineteenth century. The auction catalogue described 'emeralds' that may have included tourmalines, but again, without modern analysis, we cannot be certain.

Looting in the Modern Era: World Wars and Colonial Expansion

The two World Wars of the twentieth century caused widespread displacement of art and gems. Nazi Germany systematically looted museums and private collections across Europe, including many gem-studded objects. After the war, Allied forces recovered some of these treasures, and many were returned to their original owners, though others remain missing. Among the looted items were likely objects set with tourmaline, especially from occupied Poland, Czechoslovakia, and other European countries rich in gem-carving traditions.

Colonial expansion in the nineteenth century also involved the seizure of royal treasures. The British conquest of the Ashanti Empire in West Africa led to the sacking of the Ashanti capital Kumasi, where British forces occupied the royal palace and took numerous gold and gem-studded objects. While the Ashanti were renowned for their goldwork, they also traded for various gemstones. The famous 'Ashanti throne' or other regalia may have included green stones, but no documented chrome tourmaline has been identified.

Distinguishing Myth from Reality: Chrome Tourmaline in Crown Jewels

It is essential to caution against romanticized claims that specific crown jewels are set with chrome tourmaline. Many royal collections contain 'emeralds' that are actually tourmaline, peridot, or even colored glass, but the misidentifications are largely due to historical nomenclature, not deliberate fraud. For example, the British Crown Jewels include stones that were originally listed as emeralds but have since been reclassified as peridot or even tourmaline. The 'Black Prince's Ruby' on the Imperial State Crown is actually a large spinel, and similarly, some green stones in the collection have been identified as tourmaline upon modern examination.

One documented case is the 'Cullinan' diamond series, which are white diamonds, but other green stones in the royal collection include the 'Cullinan V' and other heart-shaped stones that are not tourmaline. However, the Victoria and Albert Museum in London houses a number of pieces set with tourmaline, some of which were acquired through colonial networks. The records show that tourmaline from Brazil and Madagascar was increasingly popular in Victorian jewelry, and some of these pieces may have been made using stones that originally arrived in Europe as diplomatic gifts or plunder from South America or Africa.

How to Identify Historical Chrome Tourmaline in Museum Collections

For collectors and enthusiasts, identifying chrome tourmaline in historical objects requires expertise. Chrome tourmaline is distinguished by its chromium content, which produces a color similar to emerald but with different spectral properties. Gemological testing, including spectroscopy and chemical analysis, can confirm the species. Museums and auction houses now routinely subject gemstones to such analysis, leading to reattributions. For instance, a piece previously labeled as 'emerald' might be reclassified as 'tourmaline' after testing.

When examining a piece of jewelry, consider the period and provenance. If a piece originates from a region where tourmaline was mined, such as Brazil or Afghanistan, and the date predates the modern gemological laboratory, the stone might be tourmaline even if labeled otherwise. However, provenance alone is not reliable. The safest approach is to rely on published research, museum catalogs, and the expertise of gemologists.

Conclusion: The Legacy of Plunder and the Enduring Allure of Green

Chrome tourmaline, with its lush green color reminiscent of emerald but with its own identity, has been entangled with royal history through conquest and plunder. While we cannot always prove that a specific stone in a royal treasury was chrome tourmaline, we can understand that green stones were universally coveted and seized by rulers from antiquity to modern times. The legacy of this history is visible in museum collections worldwide, where green tourmalines may sit alongside emeralds, their true nature revealed only through scientific analysis. The story of these stones is not merely about beauty but about power—how conquerors used gemstones to legitimize their reigns, how they redistributed wealth across continents, and how the appetite for rare green gems drove trade and warfare. For today's collector, owning a chrome tourmaline is to hold a fragment of this turbulent past, a silent witness to the ambitions of emperors and the fortunes of wars.