WHY DIAMONDS BECAME A SYMBOL OF LOVE
For centuries, people exchanged rings to represent commitment.
But the idea that an engagement ring should almost automatically contain a diamond is much more recent than you might think.
And one advertising campaign helped change that forever.
THE DIAMOND WASN'T ALWAYS THE DEFAULT
Diamonds had been used in engagement rings long before modern advertising.
One of the earliest recorded examples dates back to 1477, when Archduke Maximilian of Austria gave Mary of Burgundy a diamond betrothal ring.
But diamonds weren't automatically the standard choice.
Other gemstones and simple gold rings were also common.
Then the diamond industry changed the game.
THE PROBLEM WAS DEMAND
During the Great Depression of the 1930s, diamond purchases fell dramatically.
De Beers, which controlled a huge portion of the diamond supply at the time, needed to create stronger consumer demand.
So instead of simply advertising diamonds as expensive stones...
they started selling an idea.
DIAMONDS = LOVE
De Beers worked with advertising agencies and Hollywood to associate diamonds with romance, status and marriage.
Diamonds began appearing prominently in films and celebrity culture.
The goal wasn't just to make people want a diamond.
It was to make people believe that a diamond was the natural way to express love.
THEN CAME FOUR WORDS
In 1947, advertising copywriter Mary Frances Gerety created the famous slogan:
“A Diamond Is Forever.”
The line connected the physical durability of a diamond with the idea of everlasting love.
And it became one of the most successful advertising slogans in history.
THE GENIUS WASN'T THE SLOGAN
It was the association.
Instead of:
“Buy this expensive gemstone.”
The message became:
“This represents your relationship.”
Now the diamond wasn't just jewelry.
It was a symbol.
A proposal without a diamond could start to feel incomplete.
AND IT ACTUALLY CHANGED BEHAVIOR
In the United States, GIA reports that the percentage of brides receiving diamond engagement rings increased from around 10% in 1939 to about 80% in 1990.
That's an enormous change in consumer behavior.
The product hadn't suddenly become different.
The meaning attached to the product had changed.
THE BUSINESS MODEL WAS PSYCHOLOGY
De Beers connected several ideas together:
DIAMOND
↓
RARE
↓
VALUABLE
↓
ROMANTIC
↓
PERMANENT
↓
LOVE
Once those associations became culturally established, people weren't simply comparing diamonds with other gemstones.
They were comparing different ways of expressing love.
AND THAT'S WHY THE STORY IS SO INTERESTING
Advertising didn't invent diamonds.
People had valued them for centuries because of their beauty, durability and rarity.
And diamond engagement rings existed long before the 20th century.
But advertising helped turn an existing tradition into a mass cultural expectation.
THE REAL PRODUCT WASN'T THE DIAMOND
It was the meaning attached to it.
A piece of carbon became:
A promise.
A proposal.
A wedding.
A symbol of permanence.
A way of saying:
“I want this relationship to last.”
SIMPLE IDEA
The strongest brands don't just sell products.
They sell what the product means.
MAACAT PERSPECTIVE
De Beers didn't invent love.
It didn't invent engagement rings either.
What it helped create was something more powerful:
the idea that a diamond was the perfect physical symbol of love.
And once a product becomes connected to an emotion...
people stop asking only “How much does it cost?”
They start asking “What does it mean if I don't buy it?”
