Diamond Prices – August 2021

The diamond industry has fully recovered from the negative impact of the COVID-19 pandemic which has left us feeling optimistic about the future of diamond prices. As we head into the final months of 2021, we will continue to report on diamond prices and the contributing factors that could influence their value. Here is the latest on the average price of round diamonds for August 2021:


Top Five Popular Diamond Shapes for August 2021.

Round diamonds continue to be the most popular shape of diamond on the market. In fact, round has risen in popularity (%) since July. Princess has increased in popularity from third to second place in the past month. Cushion has decreased to third place. Whereas, oval has increased in popularity (%) taking fourth place overtaking emerald which is back in fifth. There have been no major changes in the Top 5 Popular Diamond Shapes in the past three months. 


Diamond prices August 2021

The table below gives you the rundown and details of the changes for the last three months (06/01/2021 – 08/01/2021).

Diamond Price Changes from 6/1/2021 to 8/1/2021
Diamond Carat Sizes6/1/20217/1/20218/1/2021
0.0 – 0.51 % 3 % -1 %
0.5 – 1.00 %3 % 3 %
1.0 – 2.02 % 3 % 4 %
2.0 – 3.01 % 2 % 4 %
3.0 – 4.02 % 1 % 4 %
4.0 – 992 % 2 % 2 %

This August the average price per carat for a round diamond of 1 – 1.4 carat G color VS1 clarity is $8,576 compared to July 2021 which was an average price of $8,350. The average price per carat for round diamonds continues to increase as the diamond industry recovers from the negative impact of the COVID-19 pandemic. 

The current average and lowest prices per carat are shown in PriceScope’s diamond price charts by carat and their corresponding color and clarity.

Diamond Price Charts.

Average Diamond Price per Carat for August 2021.

Average Diamond Price per Carat (08/01/2021) 

We advise consumers to keep in mind that cut quality and vendor services such as upgrades and returns can make a significant difference in the price point when shopping for loose diamonds.

PriceScope has been collecting retail diamond prices since 2007 of over 500,000 diamonds. PriceScope diamond price chart page shows the full diamond price charts for rounds and other fancy shapes. We update the diamond prices on a monthly basis. Keep an eye out for September’s diamond prices. 

We are feeling confident about the future of diamond prices as the industry continues to recover from the negative impact of the COVID-19 pandemic. However, there is much debate on what the rise of popularity for lab-grown diamonds could mean for the price of natural diamonds.

Will the price of natural diamonds continue to rise or will we see household diamond retailers adopt lab-grown diamonds which could cause a plummet in the average price of natural diamonds?

What are your thoughts? 

Let us know by clicking the comments button below.

By Andrey Pilipchak

Latest Publications on Diamond Prices August 2021


Retail Recovery Driving Up Diamond Prices

Las Vegas… Diamond market sentiment was upbeat in July despite a seasonal slowdown and high rough prices. Robust retail sales and supply shortages supported prices for polished.

Not Enough Rough

Alrosa is not used to buying diamonds. As the largest producer of rough by volume, the Russian miner accounts for about one-quarter of global supply and is therefore second only to De Beers in setting the tone for the market.


IDEX Online Research: Year-on-Year Prices up by over 10 percent

Year-on-year prices were up 10.1 percent in July, the highest figure for at least eight years, according to IDEX Online’s research.  Prices have been showing positive growth since January and bigger increases with every successive month.

Fancy Color Diamond Prices Rise Again in Q2

Prices of fancy color diamonds kept rising in Q2, albeit at a slightly slower pace than the previous quarter.

JCK Online:

Lab-Grown Diamond Awareness Is Strong, But Consumers Still Confused

Most consumers have heard of lab-grown diamonds. They know they exist. But many still aren’t quite sure what they are.


Richemont’s Cartier Says ‘No’ To Lab-Grown Diamonds, But Cartier Scion Jean Dousset Says ‘Oui’

It’s a study in contrasts between old luxury and new: Cartier the brand and jewelry entrepreneur Jean Dousset, the great-great-grandson of Cartier’s founder, on lab-grown diamonds.

New Third-Party Diamond Standard Certifies World’s First Climate Neutral Lab-Grown Diamonds With Verified Origin

In late June 2021, Latitude a lab-grown diamond company that’s a division of the Washington D.C.-based WD Lab Grown Diamonds opened a new chapter in jewelry history by announcing that it is the world’s first and only diamond company to produce lab-grown diamonds that are carbon-neutral, and what’s more, climate neutral.

Edahn Golen – Diamond Research and Data:

Lightbox and Lab-Grown Diamonds: Tracing the Price Trajectory

When De Beers got into the lab-grown game in 2018, many wondered if it would drive down prices. Here’s what’s actually happened.

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