Vikings were captivated by silver – our new analysis of their precious loot reveals how far they travelled to get it

In the archaeology galleries of the Yorkshire Museum, an incredible Viking silver neck-ring takes centre stage. The ring is made of four ropes of twisted rods hammer-welded together at each end, its terminals tapering into scrolled S-shaped hooks for fastening behind the neck. Weighing over half a kilo, it makes a less-than-subtle statement about the wealth and status of its Viking owner some 1,100 years ago.

The neck-ring was part of a large silver and gold hoard found in 2012 by metal detectorists Stuart Campbell and Steve Caswell near Bedale in North Yorkshire. As the first precious object out of the ground, it was initially mistaken by Campbell for a discarded power cable.

Six years later, I got the chance to analyse the Bedale hoard, as it is now known, for its isotopes and trace elements. Alongside the neck-ring and a gold Anglo-Saxon sword pommel (probably acquired in England by these Viking raiders), the hoard contained a spectrum of cast-silver artefacts spanning the Viking age: Irish-Scandinavian artefacts from Dublin, rings from southern Scandinavia, and many cigar-shaped bars or ingots that could have been cast anywhere.

As an archaeologist investigating the historical secrets held by jewellery such as this, picking up these heavy objects and turning them over in my hands was a visceral experience. I felt connected with the desires, ambition and sheer force of these invaders from the north who had wreaked havoc on communities in northern England around AD900.

Indeed, the entire Viking age (circa 750-1050) is often described as an “age of silver”. This form of wealth was so desired that its acquisition was a primary driver of the expansion out of Scandinavia that the Vikings are most famed for. To acquire it, they were prepared to risk their own lives – and take those of many others.

Tens of thousands of silver objects and coins are known from hoards and settlements across the Scandinavian homelands of Norway, Denmark and Sweden, as well as far overseas – from England to Russia and beyond. The study of this silver’s origins opens a window on the vast web of connections these warrior-traders established – a study invigorated in recent years by scientific techniques drawn from geochemistry.

Now, our analysis of the Bedale hoard and other Viking valuables promises to change the story of when their fellow-Scandinavians began travelling thousands of miles to the east to secure the silver that so captivated them.

The origins of these ‘violent chancers’

The word “Viking” comes from the Old Norse víkingr, meaning someone who participated in a sea raid or military expedition. The seeds of the outburst of piracy and overseas expansion that characterised the Viking age were sown in the 5th and 6th centuries, following the demise of the Roman empire.

While Scandinavia was never actually part of the Roman empire, its fall severed important trade links and led to factional fighting. In addition, volcanic eruptions in the mid-6th century induced prolonged climatic cooling, leading to crop failure and famine. Together, these events fractured Scandinavian society: archaeologists can point to abandoned settlements and cultivation fields as evidence for community displacement and decline.

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There was also a striking absence of silver in the region at this time, despite Scandinavia possessing native silver ores. While Roman silver plate and coin had previously reached Scandinavia and been melted down to make huge, stunning “relief” brooches worn by women, this flow of silver had declined sharply by the 6th century. In the following century, most jewellery was made of copper alloy – silver wasn’t being mined, and in this overwhelmingly agrarian society, precious metal was an unnecessary luxury.

In Scandinavia, where farming was challenging due to short summers and long harsh winters, wealth and power lay in good farming land and cattle – with payments typically made in butter, cloth, horses, sheep, hides and iron. As archaeologist Dagfinn Skre explains:

In an economy in which the supply of necessities was threatened, a man who had his moveable wealth in cows … would survive, but one who had it invested in metal would die. His metal would be close to worthless – for who would exchange their cows, butter or grain for metal in times of famine?

Yet out of this period of domestic struggle, a new and ambitious elite emerged in Scandinavia, particularly around the fjords of Norway and in the central Mälaren valley in Sweden – fertile regions which afforded access to both inland resources and coastal waterways.

Dubbed “violent chancers” by historian Guy Halsall, they seized abandoned land and valuable resources such as tar, furs and iron for weapons. They developed multiple, competing chiefdoms which they defended through a martial culture propped up by lavish consumption, trade and violence.

Archaeologists can point to tangible survivals of this culture: luxury imports such as glass claw beakers, elaborately furnished burials under huge mounds, monumental halls and full-on military kits. These warriors had shields decorated with bird-of-prey figures, crested helmets covered with silver foils, and swords with pommels covered in gold and garnets. They were not to be messed with.

Their success, coupled with these coastal people’s refined tradition of boat-building, enabled them to build and kit out fleets of ships. Surviving examples indicate these were long and narrow, with hulls made of overlapping (clinker) planking and shallow keels suitable for use in creeks, estuaries and beach landings. At first propelled by oar, the later adoption of sails enabled these ships to undertake long sea crossings.

In the late-8th century, Scandinavians began launching violent seaborne attacks on centres of wealth in neighbouring countries – first the coastal towns, monasteries and churches of modern-day Britain, Ireland and France, then later expanding their raids into Germany and Spain, and as far south as the north coast of Morocco. These centres of population provided human capital for the Viking slave trade, while enriching the invaders with portable wealth in the form of liturgical plates and reliquaries (from monasteries), silver coin and other high-status artefacts.

A raid on the north-east England island monastery of Lindisfarne in 793 – the first documented attack in the west – was probably launched from Norway. Its precise targeting suggests the raiders were well-informed about their destination, and no doubt attracted by stories of the riches held there. Writing afterwards, York cleric Alcuin described how the church had been “spattered with the blood of the priests of God, stripped of all its furnishing, exposed to the plundering of pagans”.

Alcuin blamed the attacks on his community’s “fornications, adulteries and incest” which have “poured over the land … even against the handmaids dedicated to God” – that is, nuns. The Vikings had made off not just with church treasure, but had also led away youths “into captivity”.

The capture of slaves was a common tactic. Some, like the boys from Lindisfarne, might have ended their days in Scandinavia or have been sold on at slave markets. But often, they were ransomed back to their communities for cash. After Vikings captured the abbot of St Denis in 858, for example, church treasuries “were drained dry” in order to meet their ransom demands of nearly 700lb of gold and 3,250lb of silver. “But even all this was far from being enough,” lamented the period’s chronicler Prudentius, bishop of Troyes.

The Viking pattern of raiding, looting and slaving is a dominant theme of 9th-century annals from Ireland, England and the Carolingian continent (spanning much of modern-day western Europe). In 842, Vikings made a surprise early-morning attack on the trading port of Quentovic in modern-day France. “They plundered it and laid waste,” recorded Prudentius, leaving “nothing in it except those buildings which they had been paid to spare”.

Accounts such as these record massive sums of silver extracted by the Vikings or offered as protection money. The extent of Viking accumulation of silver is staggering: the annals suggest that over the 9th century, the total loot in Viking hands amounted to 30,000lb of silver – or 7 million Carolingian pennies.

This stock is likely to have provided a stimulus to the economic development of nascent towns such as York and Lincoln in Scandinavian-settled areas of England, which are thought to have been more economically buoyant than their counterparts in “English” England.

Why did the Vikings come to value silver so highly? While the ownership of land and livestock was determined by strict laws of inheritance, silver could be obtained independently and with little resource investment, bypassing these normal routes of advancement. In this sense, silver embodied a new kind of dynamism coinciding with a different mode of behaviour.

These “nouveau rich” Vikings could not necessarily buy land with silver, but it gave them status – enabling people without inherited assets to acquire, and pass on, wealth. While the division of farmland and cattle upon marriage or death could be tricky, silver was ideally suited to such payments.

To these new generations of Scandinavians, silver became a standard of value that could guarantee investments, settle disputes and underwrite inheritance claims. It could be used to cement relationships – acting, as archaeologist Soren Sindbaek puts it, as a “virtual social glue”.

Silver analysis leads to a staggering result

But as well as value, silver stores information in its chemical composition that can reveal where it came from – something I have investigated as head of a research team over the last five years. We have analysed hundreds of silver Viking-age objects including from the Bedale hoard, with its rich mixture of rings and ingots cast by Scandinavians.

To make the hoard’s massive twisted silver neck-ring, for example, Viking metalcasters would have melted down numerous silver coins or small pieces of deliberately cut “hacksilver”. Once melted, the silver was cast into ingots, then gently hammered into long rods which were heated and twisted together to form the neck-ring.

However, this process masked the original sources of that silver. The only way to tell where it came from would require techniques from geochemistry – so I took the objects to the British Geological Survey’s laboratory in the suburbs of Nottingham, where isotope scientist Jane Evans drilled tiny samples from each silver object to measure them for lead isotopes.

Just like the isotopes (of oxygen, strontium and sulphur) that are laid down in bone and teeth – from which we can trace people’s childhood origins – isotopes of lead can be used to trace silver back to its source. Most silver ores contain trace amounts of lead, the four stable isotopes of which vary according to the ore’s geological age and composition. These lead isotopes give each ore a “fingerprint”, which carries over into silver coins and other artefacts made from it.

Given the location of the Bedale hoard in North Yorkshire, I was confident that much of the silver would have come from local Anglo-Saxon and also Carolingian sources in mainland western Europe. In England, the Vikings started to settle from around 865. How they did so – whether by seizing land, purchasing it, or settling previously uninhabited areas – isn’t entirely clear, but the loot seized during their raids must have helped the process.

Plotting the ratios of the lead isotopes in the Bedale hoard for the first time, many of the results were as expected: several silver objects matched the ratios of Anglo-Saxon and Carolingian coinage, and other objects had been refined to raise their silver content prior to casting, using local lead in the process of cupellation.

Geochemical analysis of Bedale hoard items

But while many of the artefacts in the Bedale hoard yielded predictable results, a group of nine ingots stood out. Rather than matching western silver sources or local lead, they had the same isotope ratios as the Islamic currency of dirhams.

Dirhams minted between AD750 and 900 by the Umayyads and Abbasids, in what is today Iran and Iraq, were a particularly close match. Two of these ingots were marked with a cross, although whether this carried Christian meaning or was simply a way of marking out ownership is unclear. Either way, these massive ingots must have been cast in Scandinavia from Islamic silver dirhams and brought over to England in Viking hands, before being buried in North Yorkshire.

This result is staggering. The names of villages around Bedale like Snape and Newton-le-Willows sound very far from Mesopotamia – yet the Bedale hoard contained a substantial component of silver minted in Baghdad, Tehran and Isfahan.

These results have made us question the timing of the Viking age’s eastern expansion. While Islamic dirhams are plentiful in Scandinavia, they predominantly date to the 10th century. However, our analysis suggests that dirhams were already arriving in Scandinavia in the 9th century in much larger quantities than previously thought – with many being melted down as a raw material for casting.

To understand how this happened, we need to meet the Scandinavians who looked east rather than west in search of silver and other riches.

Who were the Scandinavians who went east?

While the Viking raids on western Europe are best-known thanks to the many surviving written accounts, some of their fellow-Scandinavians – largely drawn from modern-day Sweden – headed east, establishing riverine, trade-based settlements in what is now Russia and Ukraine.

The route led across the Baltic Sea and Gulf of Finland into northern Russia, transporting furs and slaves from northern Europe to the markets of the Islamic Caliphate. Finds of dirhams in Scandinavia represent the profit from this trade and show that it, too, had silver at its heart.

Over time, these Scandinavians adapted to life on the eastern waterways, adopting some cultural practices from local people such as the nomadic Khazars. The 10th-century diplomat, Ahmad ibn Fadlan, gave a frank description of this new community of traders – known as Rus rather than Vikings – who he met on the River Volga in northern Russia:

They are the filthiest of God’s creatures. They do not clean themselves after urinating or defecating, nor do they wash themselves after having sex …They are like wandering asses.

In 921, Ibn Fadlan had been sent by the Abbasid caliph, al-Muqtadir, as part of an embassy to the king of the Volga Bulgars, located near the modern town of Kazan in Tartastan, Russia. His travelogue-style account, or risala, of that journey has become famous for the many eyewitness accounts of people he met along the way – including the Rus from northern Europe, whom he met as they traded with merchants from the Islamic empire at the market of Bulgar on the River Volga, roughly midway between Scandinavia and Baghdad.

The Rus people’s long and difficult journey from Scandinavia would have taken several months, involving multiple rivers and portages – when their boats had to be dragged across land. They traversed boreal forest and the Eurasia steppe, which was populated by various nomadic tribes. In this landscape, the only option was to travel by river – or, in winter, to use the river as an ice highway, substituting boats for sledges. But for the Rus, travelling this perilous eastern route, the Austrvegr, was worth the risk.

According to Ibn Fadlan, the Rus acted as middlemen, acquiring furs and slaves from hunter societies in forested areas and organising their shipment down river via trading posts that later developed into permanent settlements. The goods were sent to major markets such as Itil (on the Caspian Sea) and Bulgar, where they would be purchased by merchants from the caliphate.

What the Rus wanted in return for slaves and furs was dirhams: the fine silver coins, weighing roughly 3g each, which made up the currency of the Islamic Caliphate. The early 10th-century writer, Ahmad ibn Rustah, explained how the Rus “earn their living by trading in sable, grey squirrel and other furs. They sell them for silver coins which they set in belts and wear around their waist.”

Ibn Fadlan’s highly detailed travelogue explains that once a trader amassed 10,000 dirhams, he melted them down to create a neck-ring for his wife. After 20,000 dirhams, he made two. This was no doubt an exaggeration – such a neck-ring would weigh 65lb of silver – but the notion that a smallish group of traders acquired tens of thousands of silver dirhams is supported by archaeology.

For these Rus “traders”, just as important as the fur trade was the trade in enslaved people, who seem mainly to have been captured from the Slavic lands and what is now northern Russia, rather than western Europe. Scholars sometimes describe the Austrvegr as a trading route, but human trafficking can hardly be described as “trade” in the mercantile way that we understand it today. It was based on coercion and violence – the terrorising nature of Viking activity in the west was replicated in the east.

The Rus “treat their slaves well and dress them suitably”, Ibn Rusta wrote, “because for them they are an article of trade”. Yet it’s also clear that female slaves were exploited for sex. These reports underscore the grim reality of the Rus “trade” – that their insatiable quest for silver entailed human suffering.

Astonishingly, some 400,000 dirhams survive in Scandinavia and the Baltic, making the dirham the most common archaeological find type for the Viking age. However, most of these coins date to the first half of the 10th century.

Yet according to our analysis of the Bedale hoard, rather than the Viking age “starting” in the west, the eastern and western expansions may have happened in parallel from the end of the 8th century – with the wealth of the east a prime motivator of the Viking movement out of Scandinavia.

Today, in some of the place-names near Bedale in North Yorkshire, we see evidence of Scandinavian settlement: Aiskew is Old Norse for “Oak Wood”, and Firby means “Frith’s village”. But now we also have evidence of a connection between the Bedale hoard and Rus traders bringing silver back to Scandinavia from their exploits in the east – up to a century earlier than had been thought.

Laser analysis brings new discoveries

In our analysis of the Bedale hoard, lead isotopes alone weren’t enough to draw definitive conclusions. We needed additional data to confirm the Islamic origin of the nine ingots.

Not only do lead isotopes differ between source ores – so do trace elements. Gold and bismuth levels are especially helpful in evaluating the origin of silver, because, unlike other elements, they do not change when silver is melted down.

After digesting the results of the lead isotopes, I returned to the suburbs of Nottingham. With Simon Chenery, we put the Bedale hoard objects under an excimer laser (a type of ultraviolet laser), ablating tiny amounts of silver in order to record the levels of trace elements. This time, thrillingly, the results came through in real time.

They showed, for the Islamic-looking ingots, the telltale pattern of low gold that is characteristic of Abbasid silver. Abbasid dirhams of this date typically have gold levels below 0.4%, reflecting the low-gold character of nearby silver mines in the Taurus mountains, whereas gold levels in coins from western Europe are higher – around 1% in the late 9th century.

We discovered, too, that other artefacts were probably made from a mix of both western and eastern silver sources. This was true of the massive silver neck-ring as well as a smaller neck-ring from the hoard. Indeed, these two items appear to have been made from the same silver stock, suggesting that they travelled from their source to Bedale together.

While both could have been made in Scandinavia, the contribution of western silver raises the possibility that they were produced locally in Yorkshire, by metal casters with access to both distant, Islamic dirhams and local, Anglo-Saxon silver.

Our analysis shows the Islamic contribution to the Bedale hoard is more significant than we would have expected for a Viking hoard from England. In all, the nine ingots weigh 715g, equivalent to around 240 dirhams. And taking into account the Islamic contribution to the “mixed” silver artefacts, Islamic silver comprises around a third of the total weight of silver from the hoard (weighing around 3,700g).

Clearly, the Vikings were not only extracting silver from areas they raided and conquered, they were also bringing it in via their long-distance trade networks in the east. This result reveals the unexpected connectedness of the Vikings’ eastern and western expansions. Far from being separate phenomena, the profits of one directly fed into the activities of the other. Gains made from the Austrvegr may have enabled a group of Scandinavians to launch raids to the west and acquire further wealth and land.

In the west, these raids lasted for around 70 years from the late 8th century, spanning two or three generations. But eventually, the Vikings decided to settle. In northern England, where Bedale is located, they proceeded “to plough and to support themselves”, according to the Anglo-Saxon Chronicle entry for 876 AD. Finds of female Scandinavian dress items from England suggest that whole families, not just retired warriors, settled there.

Many questions remain about the nature of this settlement – including whether the raiders-turned-settlers lived separately from or with the native Anglo-Saxon population, and how the settlement process was brokered. But the former Vikings and their families appear to have integrated relatively quickly, adopting Christian forms of burial, developing craft industries in towns, and embracing coinage as a means of exchange. Among the settled Scandinavian population, the violence ceased.

Silver remained an important medium for displaying values and even identities. From around 900, new Anglo-Scandinavian rulers minted their own coinage – sometimes preserving traditional features familiar to Anglo-Saxons, but also adding new aspects that proclaimed a Scandinavian background. Coins minted by the new rulers of York, a focus of Scandinavian settlement in northern England, could have a Christian cross on one side and a Thor’s hammer – an overt pagan symbol – on the other.

These Anglo-Scandinavian coins were in use across Scandinavian-settled regions of England and are testimony to the continued importance of silver to the Viking economy – now channelled into a form that was more regulated and acceptable to the local Anglo-Saxon community. Geochemical analysis of the silver in these coins also reveals glimpses of this process of assimilation. Our investigation of a handful of examples, using the same techniques of lead isotope and trace element analysis, suggests they were made mainly with Anglo-Saxon silver – but again with a modest contribution from Islamic dirhams.

The end of the eastern adventure

The geochemical analysis of silver helps reveal the reasons for the extraordinary expansion of the Vikings and their fellow Scandinavians – including pointing to the wealth gained in eastern markets as a major (and hitherto neglected) “pull” factor. To a greater degree than has traditionally been acknowledged, eastern silver travelled across the Scandinavian world of the Viking age.

The huge number of Samanid dirhams found in Scandinavia point to the 930s-940s as the most fruitful decades for the Scandinavian travellers’ trade with the east. The Rus’s slave and fur trade continued until around 950 – and silver analysis again helps to explain why it came to a fairly sudden end. Analysis of the silver content of dirhams shows their fineness declined sharply from the 940s and 950s – a reflection, no doubt, of the drying up of silver mines in Central Asia.

It did not take long for Vikings to seek out silver sources closer to home. They turned to coins from the area of modern-day Germany, struck with silver from the newly-exploited Harz mountains, which they obtained mainly through trade. The decline in the silver content of dirhams thus led to a major reconfiguration of Scandinavian trade routes.

From this point on, long-distance trade with the east declined significantly. The Vikings instead turned again to the west, establishing trade links with England and Germany. In the late 10th century, increasingly powerful Scandinavian kings also launched new seaborne raids, exploiting the weakness of English kings such as Æthelred II “the Unready” (978–1016) and initiating what has become known as the “second Viking age” in England.

These raids, launched from around 980, were bigger, more centrally organised, and successful. The Vikings obtained significant quantities of “Danegeld”: protection payments made in coin. Ultimately, in 1016, the Danish king Cnut established himself on the English throne. The nature of the relationship between England and Scandinavia during this period is also being explored through silver, in a project on coinage from the recently-discovered Lenborough hoard.

If the pattern identified for the Bedale hoard plays out across other Viking hoards, it will prompt a major re-evaluation of the movements of the earliest Scandinavian warrior-traders. As part of the same project, we have been analysing Viking silver hoards of a similar 9th-century date from Sweden and Denmark, the Carolingian continent, southern Scotland and the west coast of England. Preliminary results suggest a regional pattern, but with Islamic silver appearing to be dominant in many cases.

What’s clear is that in the 9th century, the Vikings were already awash in Islamic silver. Meanwhile, more undiscovered treasures like that found in Bedale lie quietly underground, waiting to reveal their secrets.

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Jane Kershaw receives funding from the European Research Council.