Diamonds Arenât Rare, but Their Availability Is
Letâs set the record straight: diamonds are not rare. In fact, theyâre more common than emeralds, rubies, or sapphires. But for over a century, De Beers â a British/South African mining company â controlled the global diamond market so tightly that they cleverly manipulated diamond into seeming the rarest treasure on Earth.

The De Beers Monopoly

The Cartel Era: Starting in the late 1800s, De Beers created a cartel to manage diamond supply. They bought up mines, controlled the flow of diamonds onto the market, and stored vast quantities in vaults to create artificial scarcity. Think of it as putting diamonds on a diet: fewer stones on the shelves, higher prices at the till. From its inception in 1888 until the start of the 21st century, De Beers controlled 80% to 85% of rough diamond distribution and was considered a monopoly.
Marketing Genius: In 1948, and needing a boost after the a decline in sales following the Great Depression, De Beers launched their now-iconic slogan, âA Diamond Is Foreverâ. This was written by Frances Gerety, a copywriter at the Philadelphia Ad Agency N. W. Ayer & Son, who was given the job purely as she was one of few women in the office.
The slogan was written on a piece of paper late one night, and though Francesâs associates were hesitant to use it due to the strange grammar, it has become one of the most recognisable advertising moments of all time (thanks in no small part to its wild success). It wasnât just an ad â it was a cultural reset â and âA Diamond Is Foreverâ has been used in every single De Beers ad since 1948 to present day.
Suddenly, diamonds were propelled from being pretty items to ones that were essential to proposals, anniversaries, and declarations of eternal love. Because who can argue with forever?
Withholding Supply: By pairing this new found consumer drive and desire for diamonds with their supply of the stones, De Beers ensured that diamonds became completely synonymous with exclusivity. The fewer there are, the more desirable they seem: a classic case of manufactured demand. To contextualise just how powerful this re-positioning of the diamond was for De Beers, from 1939 to 1979, their wholesale sales in the United States increased from a modest $23 million to a massive $2.1 billion.
In 2023, De Beersâ rough diamond sales were $3.63 billion.Â
Why Are Mined Diamonds Still So Expensive Today?
De Beersâ monopoly may have waned, but the high price of diamonds hasnât:
- Tradition Lingers:Â Decades of clever advertising have ingrained the idea that diamonds are the only suitable symbol of love. Even as new generations challenge traditions, the diamond ring remains a cultural heavyweight.
- Mining Costs:Â Extracting diamonds is labour-intensive, environmentally damaging, and expensive. From digging up tonnes of earth to transporting stones halfway around the world, mining is a logistical nightmare (and a planet-sized headache).
- Market Dynamics:Â Even though new players have entered the diamond market, the industry still relies on limited supply and high demand to keep prices inflated.
Emeralds: The Underrated Treasure
Hereâs a fun fact to blow your mind: emeralds are actually rarer than diamonds. Yet, theyâre often less expensive. Why?
Put simply, they didnât have the marketing machine (or cartel) that diamonds did. Without a company like De Beers to create global demand, emeralds never got the âforeverâ treatment. Diamonds may be forever, but emeralds? Theyâre quietly basking in their exclusivity, unbothered by the hype (and we LOVE them for it).

Why Lab Grown Diamonds Are The Better Choice
Lab-grown diamonds donât just sparkle: they shine a light on the diamond industryâs outdated practices, exposing why something positioned as the most desirable object â the mined diamond â should actually be one of the least.
- No Cartels, No Markups:Â Lab-grown diamonds donât rely on mining cartels to control their supply. Theyâre made in controlled environments, so thereâs no hoarding, no vaults, and no artificial scarcity. What you see is what you get â at a fair price.
- Same Sparkle, Better Value:Â Chemically, physically, and optically identical to mined diamonds, lab-grown diamonds offer the same brilliance without the hefty markup. Youâre not paying for someone elseâs marketing, youâre investing in quality.
- Ethical and Eco-Friendly:Â No displaced communities, no deforestation, and no murky supply chains. Lab-grown diamonds give you the sparkle without the guilt, making them a perfect fit for modern values.
- Breaking the Cycle:Â By choosing lab-grown, youâre saying no to outdated traditions of monopolisation and yes to a future that values transparency, affordability, and innovation.
Our Take on Mined Diamonds
The diamond industry might have built its empire on clever tricks and exclusivity, but times are changing, and so are the choices youâre able to make. At Adamas Studio, we believe your diamond should reflect your values, not outdated industry practices. Thatâs why we champion lab-grown diamonds: real, ethical, and free from the nonsense of inflated prices and artificial scarcity.