News & Press: Member News

10 Diamond and Lab-Grown Facts

Wednesday, November 7, 2018  
Share |

By Diamond Producers Association

Dominion Rough

1) Diamonds are older than life on Earth, a true miracle of nature.

Long before there was life on Earth, there were diamonds. Most were created one to three billion years ago, and the youngest diamond ever found was over 100 million years old. Originating more than 100 miles beneath the Earth, they were pushed to the surface by volcanic eruptions 300-400 million years ago, long before dinosaurs roamed. Diamonds are the oldest thing that most of us will ever hold.

Volcanic Eruptions

2) Diamonds are rare and getting rarer everyday.

The number of recovered diamonds peaked in 2005 and will decrease significantly over the next decade. Diamond-bearing kimberlites, the ancient, underground volcanic pipes that hold most of today’s diamonds, are very hard to find. In fact, most of the diamonds recovered today come from kimberlites discovered decades ago, which is why diamond production is gradually decreasing and diamonds are becoming rarer.

ANNUAL DIAMOND PRODUCTION The volume corresponding to the annual production of diamonds once carat and up in size is equivalent to the volume of two basketballs. It is that of a soccer ball for diamonds two carat and up in size, and that of a tennis ball for diamonds five carat and up in size.

Annual Diamond Production diagram

3) Demand for diamonds has never been stronger.

2017 was the strongest year ever for diamond jewelry in the world, including in the U.S. Millennials represent 59% of the value of diamond jewelry demand, while making up only a quarter of the population. Research shows that Millennials have a strong interest in products that offer authenticity, rarity and preciousness – and a billion-year-old diamond is an ideal expression of authenticity in their lives and relationships. A real, natural diamond carries deep emotional meaning in a swipe-right world where things are increasingly fast and artificial.

59% of the value of diamond jewelry demand in 2017 was from Millennial consumers.

Growth of U.S. Diamond Market

Source: De Beers Insight Reports 2017, 2018

4) Conflict diamonds are a thing of the past.

Conflict diamonds, as depicted in the 2006 movie Blood Diamond, set in the 1990s, are largely a thing of the past. Since then, African rebellions have receded and the industry has put in place strict controls – e.g. the Kimberley Process – to ensure that no diamonds coming from conflict-zones are traded. As a result, 99.8% of diamonds are Kimberley-compliant. Moreover, all major producers have safeguards in place to guarantee their diamonds are produced responsibly.

99.8% of all diamonds are Kimberley Process certified

De Beers Rough


5) The diamond industry makes an important contribution to the world.

The diamond sector supports the livelihood of 10 million people globally, including 1.5 million Artisanal and small-scale miners and their families in Africa and South America who provide 15% of the world’s diamonds and whose livelihoods depend on demand for diamonds. The discovery of diamonds in Botswana has transformed the country from one of the poorest in the world to a middle-income country. Today, every child there receives free schooling until the age of 13 thanks to diamond revenues that represent almost a third of Botswana’s GDP. In the Indian state of Gujarat, the diamond sector employs about one million people and funds schools and hospitals.

By any standard, diamond mining has a very small environmental footprint and no chemicals are used to remove diamonds from the Earth. Mining companies are closely monitored by governments and local communities. Many operations are working on projects to move towards carbon-neutral status. The carbon footprint of a 1-carat polished, natural diamond is smaller than that of most CVD laboratory-grown diamonds of similar size.

Close to 10% of the energy that powers the Diavik mine in Canada comes from its wind farm.

Diavik Windfarm


Laboratory-Grown Diamonds


Type IIa Diamonds

6) Laboratory-grown diamonds have essentially the same physical and chemical characteristics as natural diamonds, but they are not identical, and they are easily detected.

Laboratory-grown diamonds are produced in 2-3 weeks using two different methods: High Pressure High Temperature (HPHT) and Chemical Vapor Deposition (CVD). Each method leaves growth marks and telltale signs that are distinctive of an artificially produced diamond, this is how they can be identified using professional instruments. Moreover, some laboratory-grown diamonds need to be color treated to correct distortions created during the industrial production process.

Lab-grown pressure marks

7) Laboratory-grown diamonds are produced in a matter of weeks, primarily in factories situated outside of the US, mostly in Asia.

Most laboratory-grown diamonds are not produced in the U.S. but in China, India, and Singapore. There is a lot of investment in new production capacity in Asia today and the share of Asian producers is likely to increase further. Laboratory-grown diamond producers often make claims about their product being “eco-friendly,” “transparent,” and “sourced with integrity.” However, these claims are currently unsubstantiated by unbiased, third-party scientific data, and the origin of the product is almost never disclosed.

Diamond Lab

8) Retail price continues to erode as the costs of production decline.

Production costs of laboratory-grown diamonds are driven almost entirely by electricity usage, which is why some producers move to regions where electricity costs are low. As technology improves, production costs will continue to decline. In the case of colored gemstones like rubies, sapphires or emeralds, the price of laboratory-grown stones is about 10% of that of the natural stone.

Also important to know: due to economies of scale, the larger the laboratory-grown diamond produced, the lower the cost per carat – a stark contrast to natural gemstones.

As an industrial product, a laboratory-grown diamond has no resale value and its price is falling rapidly.

Price of one carat natural diamond

Data Source: Natural and laboratory-grown prices: Paul Zimnisky,

9) The carbon emissions for a one carat laboratory-grown diamond are similar to, and sometimes greater than, those for an equivalent natural diamond.

When making comparisons with natural diamonds, laboratory-grown diamond manufacturers often quote theoretical carbon emissions for laboratory-grown diamonds that assume that they use 100% renewable energy. In reality, laboratory-grown diamond production today primarily uses electricity generated by fossil fuels, mostly in China, India and Singapore. Rigorous comparisons require case by case analysis, depending on producer and country grid emission factors. Taking the example of a one ct laboratory-grown diamond produced in Singapore using the Chemical Vapor Deposition (CVD) method where a significant volume of the CVD laboratory-grown diamonds are produced, the carbon emission per polished carat is approximately 40% higher than for natural polished diamonds.

Carbon emission per carat

10) A large majority of consumers do not consider laboratory-grown diamonds produced in a factory to be real diamonds because they are not formed naturally in the Earth.

A Harris poll from May 2018 shows that 68% of US consumers believe that a laboratory-grown diamond is not a “real diamond.” Only 16% of respondents believe they are. Other surveys show that as they learn about the lack of inherent value of laboratory-grown diamonds, fewer consumers consider them to celebrate important moments in their lives, even if a growing proportion consider them for fast fashion jewelry.

68% of US consumers believe that a laboratory-grown diamond produced in a factory is not a “real diamond”

Source: Harris Poll, 360 Study, for DPA


Mission Statement

The American Gem Society (AGS) is a nonprofit trade association of fine jewelry professionals dedicated to setting, maintaining and promoting the highest standards of ethical conduct and professional behavior through education, accreditation, recertification of its membership, gemological standards, and gemological research.

The Society is committed to providing educational products to inform and protect the consumer and to contributing to the betterment of the trade by creating industry standards to protect the jewelry-buying public and the fine jewelry industry as a whole.

AGS Laboratories, founded to support the AGS mission, is a nonprofit diamond grading laboratory with a mission of consumer protection. Adhering to the AGS Diamond Grading Standards, AGS Laboratories is dedicated to offering diamond grading reports that provide consistency and accuracy based on science.

American Gem Society