A Historical Guide to the Gold-Silver Ratio

Investors who begin to trade or follow the gold and silver markets aren't likely to go long without reading or hearing about the gold-silver ratio. The gold-silver ratio is an expression of the price relationship between gold and silver. The ratio shows the number of ounces of silver it takes to equal the value of one ounce of gold. For example, if the price of gold is $1,000 an ounce and the price of silver is $20 an ounce, then the gold-silver ratio is 50:1.

The gold-silver ratio is the oldest continuously tracked exchange rate in history. The primary reason the ratio is followed is that gold and silver prices have such a well-established correlation and have rarely deviated from one another.

Key Takeaways

  • The gold-silver ratio expresses the price relationship between gold and silver.
  • The ratio shows the number of ounces of silver it takes to equal one ounce of gold.
  • The gold-silver ratio used to be set by governments for monetary stability but now fluctuates with the market.
  • Throughout history, the ratio has remained fairly stable with increased volatility beginning in the 20th century.
  • Traders and investors trade the gold-silver ratio for hedging purposes as well as to realize profits.

The History of the Gold-Silver Ratio

Historically, the gold-silver ratio has only evidenced substantial fluctuation since just before the beginning of the 20th century. For hundreds of years prior to that time, the ratio, often set by governments for purposes of monetary stability, was fairly steady.

The Roman Empire officially set the ratio at 12:1. The ratio reached 14.2:1 in Venice in 1305 and remained at this level up until 1330 when it fell to 10:1. In 1350 it fell to 9.4:1 in some places across Europe. It climbed back to 12:1 in the 1450s. The U.S. government fixed the ratio at 15:1 with the Coinage Act of 1792.

The discovery of massive amounts of silver in the Americas, combined with a number of successive government attempts to manipulate gold and silver prices, led to substantially greater volatility in the ratio throughout the 20th century.

When President Roosevelt set the price of gold at $35 an ounce in 1934, the ratio began to climb to new, higher levels, peaking at 98:1 in 1939. Following the end of World War II, and the Bretton Woods Agreement of 1944, which pegged foreign exchange rates to the price of gold, the ratio steadily declined, in the 1960s and again in the late 1970s after the abandonment of the gold standard. From there, the ratio rose rapidly through the 1980s, peaking at 97.5:1 in 1991 when silver prices declined to a low of less than $4 an ounce.

For the whole of the 20th century, the average gold-silver ratio was 47:1. In the 21st century, the ratio has ranged mainly between the levels of 50:1 and 70:1, breaking above that point in 2018 with a peak of 104.98:1 in 2020. The lowest level for the ratio was 35:1 in 2011.

Gold-Silver Ratio
Source: MacroTrends.

The Importance of the Gold-Silver Ratio for Investors

The practice of trading the gold-silver ratio is common among investors in gold and silver. The most common method of trading the ratio is that of hedging a long position in one metal with a short position in the other.

For example, if the ratio is at historically high levels and investors anticipate a decline in the ratio that would reflect a decline in the price of gold relative to the price of silver, investors should simultaneously buy silver while selling short an equivalent amount of gold, looking to realize a net profit from a relatively better price performance of silver compared to that of gold.

Investors trading gold and silver look to the gold-silver ratio as an indicator of the right time to buy or sell a certain metal.

The advantage of such a strategy is that, as long as the gold-silver ratio moves in the direction an investor anticipates, then the strategy is profitable regardless of whether gold and silver prices generally are rising or falling.

Here is an example showing the outcome of such a trading strategy. From around the end of 2008 to the middle of 2011, the gold-silver ratio declined from approximately 80:1 to around 45:1.

During that period, the price of silver rose from around $11 an ounce to approximately $30 an ounce. The price of gold rose from approximately $850 an ounce to $1,400 an ounce. A 2008 buy of 80 ounces of silver against a short sell of one ounce of gold would have resulted in a profit of $1,520 in silver against a loss of $550 in gold, for a net profit of $970.

How Is the Gold-Silver Ratio Computed?

The gold-silver ratio is calculated by dividing the current market price of one ounce of gold by the current price of one ounce of silver.

When Was the Gold-Silver Ratio at Its Highest?

The highest the gold-silver ratio has been in recent history was in April of 2020, following the onset of the COVI19 pandemic, when the price of gold outpaced silver by more than 125:1.

What Is the Historic Long-Run Average for the Gold-Silver Ratio?

The long-run average gold/silver ratio is around 65:1 since the 1970s when the gold standard was abandoned. Historically, however, the ratio hovered more around 15:1.

The Bottom Line

The gold-silver ratio measures the amount of silver it takes to equal an ounce of gold. The ratio remained fairly stable throughout most of history, starting to fluctuate in the 20th century.

The ratio is important to investors as they trade it with the purpose of hedging certain metal positions as well as the ability to generate profits from their positions.

Article Sources
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  1. Bürger, O. "The monetary aspect of gold from prehistoric to modern times." Prehistoric Gold in Europe. Springer, Dordrecht, 1995. Pp. 33-44.

  2. Munro, John H. "Medieval monetary problems: Bimetallism and bullionism." The Journal of Economic History, Vol. 43, No. 1. 1983. Pp. 294-298.

  3. Department of Economics University of Toronto. "Medieval Monetary Problems: Bimetallism and Bullionism."

  4. Federation of American Scientists. "Congressional Research Service. Brief History of the Gold Standard in the United States," Page 2.

  5. Federal Reserve History. "Gold Reserve Act of 1934."

  6. Longtermtrends. "Gold to Silver Ratio."

  7. CPM Group. "The Gold/Silver Ratio."

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