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The World’s Most Famous Diamonds

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The World's Most Famous Diamonds

The World’s Most Famous Diamonds

The stories and histories of the most famous diamonds

You may have heard of the Cullinan Diamond or the Hope Diamond before, but do you know the stories behind these legendary finds?

Today’s infographic looks at the history and characteristics of six of the most famous diamonds.

A Diamond Primer

Every diamond is unique, and as a result the value of a particular diamond is partially determined by the eye of the beholder. The diamond industry generally uses a set of criteria called the Four C’s to help evaluate the potential value of a diamond: Clarity, Cut, Carats, and Color.

Most diamonds found have major deficiencies in one or more of the above categories. For example, while a diamond may be clear and large in size, it may have a less desirable color and shape. In a previous infographic, we explain the importance of these characteristics in more depth, and we’ve also previously posted on the significance of rare-colored diamonds.

The most famous diamonds in the world are exceptionally rare: they tend to excel in all four of the above categories. They are a desired color and shape, have great clarity, and are giant in size.

The Most Famous Diamonds

The stories behind six of the most famous diamonds in brief:

The Cullinan Diamond: Perhaps the most well-known, the Cullinan Diamond was discovered in 1905 in South Africa. Weighing in at 3,106.75 carats, the Cullinan is the largest rough gem-quality diamond ever discovered. The diamond was ultimately cut into nine smaller stones including the 530.20 carat Star of Africa, which is valued at over $400 million alone.

The Hope Diamond: The Hope Diamond is a grayish-blue diamond that was discovered in India at an unknown date. It has a long history, in which it changed hands numerous times between countries and eventually ended up at the Smithsonian Institute in Washington, D.C.

The Centenary Diamond: The Centenary Diamond is considered to be one of the most flawless diamonds, both internally and externally. Discovered in South Africa, it was unveiled in its final form by De Beers in 1991. The current owner is unknown.

The Regent Diamond: This pale blue diamond was discovered by a slave in India in 1698. After eventually making it to the crowns of Louis XV and Louis XVI in France, it is now on display at the Louvre in Paris and weighs 140.64 carats.

The Koh-i-Noor Diamond: Meaning “Mountain of Light” in the Persian language, this diamond was discovered at a mine in India. It is of the finest white color, and made its way from a Hindu temple eventually to the Crown of Queen Elizabeth in 1850.

The Orlov Diamond: Discovered in India at an unknown date, this jewel retains its traditional Indian rose-style cut. The Orlov, which weighs in at 189.62 carats and is white with a faint bluish-green color, now rests in the Kremlin in Russia.

The world’s most famous diamonds all have intriguing stories behind their discoveries. However, a diamond prospector doesn’t need to find a diamond to strike it rich: check out the infographic story of Diamond Fields, a diamond company that ended up finding and auctioning off one of the world’s richest nickel deposits for billions.

Original graphic by: Gear Jewellers

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Explained: India’s Gold Demand During Diwali

Why do Indians buy gold during Diwali?

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india's gold demand during diwali

India’s Gold Demand During Diwali

In India, gold’s significance goes far beyond investment and jewelry. The yellow metal is woven into India’s cultural history and is revered by a population of over 1.3 billion.

India is one of the largest markets for gold consumption, with jewelry, bars, and coins accounting for the bulk of annual demand. Indian gold demand typically peaks between October and December on the back of Diwali, the festival of lights, followed by thousands of weddings.

But why do Indians buy gold during Diwali?

Gold’s Significance During Diwali

Indians consider it auspicious to purchase gold—a symbol of wealth, purity, and prosperity—on many festive occasions, and Diwali is the biggest one of them.

Diwali is a five-day festival that celebrates the triumph of good over evil and light over darkness, based on Hindu mythology. For many Indians, this festival is associated with welcoming good luck, positivity, and prosperity.

People often dedicate gold purchases during Diwali to deities, especially Lakshmi, the goddess of wealth. Gold is also a popular festive and wedding gift at this time of the year.

India’s Record Gold Demand in Diwali 2021

India’s gold consumption in the second half of every year is typically higher than in the first half, coinciding with Diwali in October (beginning of Q4), according to data from the World Gold Council.

YearGold Jewelry, Bar, and Coin Demand
(tonnes)
YoY % Change
H1 2010447N/A
H2 2010555N/A
H1 201159032.1%
H2 2011384-30.8%
H1 2012404-31.5%
H2 201251032.7%
H1 201355737.9%
H2 2013402-21.3%
H1 2014370-33.5%
H2 201446315.3%
H1 2015350-5.5%
H2 20155079.5%
H1 2016229-34.5%
H2 2016437-13.9%
H1 201736358.4%
H2 2017408-6.6%
H1 2018341-6.2%
H2 20184202.9%
H1 20193729.2%
H2 2019318-24.2%
H1 2020166-55.5%
H2 2020281-11.8%
H1 202128572.3%
H2 202151282.3%
H1 20223067.3%

Following a significant drop in demand in 2020, Indians bought a record amount of gold jewelry in Q4 2021 at 265 tonnes, worth $15.3 billion at the time. Overall, gold jewelry, bar, and coin demand in H2 2021 saw an 82% increase year-over-year.

This increase was largely driven by the festive season and pent-up demand from subdued celebrations and consumption in 2020. As of the first half of 2022, gold demand was up 7.3% relative to 2021.

With Diwali celebrations in full swing, will India see another record quarter for gold demand? It remains to be seen, with gold’s festive tailwinds likely to meet economic headwinds in the form of uncertainty and higher import duties.

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All the Metals We Mined in 2021 in One Visualization

See the 2.8 billion tonnes of metals mined in 2021.

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all the metals mined in 2021

All the Metals We Mined in 2021

“If you can’t grow it, you have to mine it” is a famous saying that encapsulates the importance of minerals and metals in the modern world.

From every building we enter to every device we use, virtually everything around us contains some amount of metal.

The above infographic visualizes all 2.8 billion tonnes of metals mined in 2021 and highlights each metal’s largest end-use using data from the United States Geological Survey (USGS).

Why Do We Mine So Much Iron Ore?

Iron ore accounted for 93% of the metals mined in 2021, with 2.6 billion tonnes extracted from the ground. It’s important to note that this is ore production, which is typically higher than metal production since metals are extracted and refined from ores.

Metal/Ore2021 Mine Production (tonnes)% of Total
Iron ore2,600,000,00093.4%
Industrial metals181,579,8926.5%
Technology and precious metals1,474,8890.05%
Total2,783,054,781100%

With 98% of it converted into pig iron to make steel, iron ore is ubiquitous in our lives. Steel made from iron ore is used in construction, transportation, and household appliances, and it’s likely that you encounter something made out of it every day, especially if you live in a city.

Due to its key role in building infrastructure, iron ore is one of the most important materials supporting urbanization and economic growth.

Industrial Metals

Industrial metals are largely used in steelmaking, construction, chemical manufacturing, and as alloying agents. In 2021, the world mined over 181 million tonnes of these metals.

Industrial Metals2021 Mine Production (tonnes)% of Total
Aluminum*68,000,00037.4%
Chromium41,000,00022.6%
Copper21,000,00011.6%
Manganese20,000,00011.0%
Zinc13,000,0007.2%
Titanium (mineral concentrates)9,000,0005.0%
Lead4,300,0002.4%
Nickel2,700,0001.5%
Zirconium Minerals (Zircon)1,200,0000.7%
Magnesium*950,0000.5%
Strontium360,0000.2%
Uranium48,3320.03%
Bismuth*19,0000.01%
Mercury2,3000.001%
Beryllium2600.0001%
Total181,579,892100.0%

*Represents refinery/smelter production.

Aluminum accounted for nearly 40% of industrial metal production in 2021. China was by far the largest aluminum producer, making up more than half of global production. The construction industry uses roughly 25% of annually produced aluminum, with 23% going into transportation.

Chromium is a lesser-known metal with a key role in making stainless steel stainless. In fact, stainless steel is usually composed of 10% to 30% of chromium, enhancing its strength and corrosion resistance.

Copper, manganese, and zinc round out the top five industrial metals mined in 2021, each with its own unique properties and roles in the economy.

Technology and Precious Metals

Technology metals include those that are commonly used in technology and devices. Compared to industrial metals, these are usually mined on a smaller scale and could see faster consumption growth as the world adopts new technologies.

Technology and Precious Metals2021 Mine Production (tonnes)% of Total
Tin300,00020.3%
Molybdenum300,00020.3%
Rare Earth Oxides280,00019.0%
Cobalt170,00011.5%
Vanadium110,0007.5%
Lithium106,0007.2%
Tungsten79,0005.4%
Niobium75,0005.1%
Silver24,0001.6%
Cadmium24,0001.6%
Gold3,0000.2%
Tantalum2,1000.1%
Indium*9200.1%
Gallium4300.03%
Platinum Group Metals3800.03%
Rhenium590.004%
Total1,474,889100%

*Represents refinery/smelter production.

The major use of rhenium, one of the rarest metals, is in superalloys that are critical for engine turbine blades in aircraft and gas turbine engines. The petroleum industry uses it in rhenium-platinum catalysts to produce high-octane gasoline for vehicles.

In terms of growth, clean energy technology metals stand out. For example, lithium production has more than doubled since 2016 and is set to ride the boom in EV battery manufacturing. Over the same period, global rare earth production more than doubled, driven by the rising demand for magnets.

Indium is another interesting metal on this list. Most of it is used to make indium tin oxide, an important component of touchscreens, TV screens, and solar panels.

The Metal Mining Megatrend

The world’s material consumption has grown significantly over the last few decades, with growing economies and cities demanding more resources.

Global production of both iron ore and aluminum has more than tripled relative to the mid-1990s. Other metals, including copper and steel, have also seen significant consumption growth.

Today, economies are not only growing and urbanizing but also adopting mineral-intensive clean energy technologies, pointing towards further increases in metal production and consumption.

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