Branding · Global · 1947

De Beers: A Diamond Is Forever

Four words linked a stone to eternal love, and created the modern engagement ring.

By Maer Media editorial teamPublished 4 October 20263 min readN.W. AyerBranding · Campaigns

Sloganof the century, per Ad Age
1947the line
N.W. Ayeragency
1947Global · Branding
Brand
De Beers
Market
Global
Year
1947
Category
Branding
Agency or team
N.W. Ayer
Channels
Print, film

The context

Diamond demand was weak after the Depression. De Beers needed diamonds to feel essential.

The insight

Diamonds needed emotional meaning.

The move

N.W. Ayer copywriter Frances Gerety wrote “A Diamond Is Forever”, tying diamonds to permanent love and discouraging resale.

How it was executed

  1. Linked diamonds to eternal love.
  2. Tied them to the engagement ritual.
  3. Repeated the line for decades.

Four words linked a stone to eternal love, and created the modern engagement ring.

What happened Reported facts

Ad Age named it the slogan of the century, and diamond engagement rings became a widespread tradition.

Why it worked Maer’s analysis

Meaning shaped behaviour.

What to take from it Maer’s analysis

  1. 01Attach the product to a ritual.
  2. 02A line can create a category norm.
  3. 03Meaning shapes price.
If you’re building in India

Indian jewellery brands can attach products to rituals responsibly.

Where Maer applies this

The same thinking runs through these brand templates:

Sources: Ad Age (1999); De Beers. Figures are as publicly reported; Maer Media was not involved in this work and is not affiliated with De Beers.

About the author

The Maer Media editorial team studies how brands are built, from positioning and packaging to launches and growth. Figures in each case study come from the public sources listed above; the analysis and the India notes are our own. More about Maer

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