Editors

A State-By-State Breakdown on Diamond Shapes and Sizes

EditorsFeb 26, 2016

A State-By-State Breakdown on Diamond Shapes and Sizes

Which states are home to the country’s biggest diamonds? What are the most popular diamond shapes where your store is located? Editor-in-Chief Michelle Graff examines it all via White Pine’s new report.

20160226_White-Pine-study.jpg
Not many surprises here--round and princess-cut diamonds are the top most popular diamond shapes in the United States while the heart, the Asscher and the baguette lag, data recently released by White Pine shows.

Which state is home to consumers with the biggest and best diamonds (and no, the answer is not Texas)? What’s the popular most diamond shape in Alabama? California? Alaska?

These are some of the questions White Pine aimed to answer with a recently released report on diamond jewelry ownership in the United States. 

Many jewelers already are familiar with White Pine, which has a business-to-business arm called White Pine Trading that buys and sells pre-owned jewelry and diamonds within the trade.

But, through WP Diamonds and WPDiamonds.com, the company also deals directly with thousands of consumers, which gives it access to a wealth of data about what type of jewelry and diamonds people actually own.

Matthew Howe, the company’s vice president of marketing, said White Pine has opted to begin sharing some of that data with the industry, and so it has published this first report, America’s Diamond and Jewelry Ranking. 

The report is based on 15,000 consumer inquiries and interactions but, Howe pointed out, it is not a ranking of what’s selling at retail right now. It’s an ownership study, looking at what people already have and where they live.

There’s much to examine in the report and I had a hard time deciding where to begin but, in the interest of getting out of the office before 7 p.m. for once, I decided to go with diamond shape.

What the report shows about the most popular diamond shapes in the U.S. is not unexpected in the least, with round and princess-cut diamonds comprising the majority of the market.

What Howe said he did find surprising was that cushion-, emerald- and marquise-cut diamonds were all in the same ballpark in terms of ownership. A total of 4.8 percent of consumers included in the study owned a marquise, while 4.47 percent owned an emerald-cut diamond and 4.12 percent had a cushion; they were the three most commonly owned cuts after rounds and princesses.

The White Report also noted that since the launch of WPDiamonds.com in 2012, oval-shaped diamonds, which, as I understand it, are gaining ground in the market along with marquises and pears, have increased in popularity. They’ve gone from being the eighth most popular diamond cut in the country to the sixth in that three-year span. (And both ovals and pears are apparently very popular in Texas.)

From shape, we can move on to

size, meaning, what states have the biggest and best diamonds (two distinctly different categories in the White Pine study).

For me, there were absolutely no surprises when it came to the top five states for diamond quality: New York, Florida (home to many now-retired former New Yorkers), California, Connecticut (home to many people who have high-paying jobs in New York City) and Maryland.

Howe pointed out that Arizona and North Carolina, which, like Florida, are big retirement states for people with the means to do so, also ranked fairly high on the diamond quality scale, coming in at Nos. 15 and 17, respectively. 

In addition to having some of the country’s highest-quality diamonds, Maryland and New York made it into the top five for average diamond size, which was analyzed by looking at loose stones, rings and diamonds set into jewelry but using only the largest diamond per piece for the data.

Maryland actually came in first with an average carat size of 1.75, followed by Michigan (1.69), Illinois (1.59), Alaska (1.49) and New York (1.47 carats).

The state with the smallest average diamonds was Vermont, at 1.03 carats.

Want to see more about what consumers own in the state where your store, or stores, is located? A complete rundown of the results is available to view at no charge on WPDiamonds.com.
Michelle Graffis the editor-in-chief at National Jeweler, directing the publication’s coverage both online and in print.

The Latest

Stock image of shipping containers
Policies & IssuesMar 05, 2026
Tariffs to Increase to 15% This Week, Treasury Secretary Says

Also, a federal judge has ordered that companies that paid tariffs implemented under the IEEPA are entitled to refunds.

Common Era Difficult Women Pandora Pendant, Anne Boleyn Signet Ring, Cleopatra Pendant
CollectionsMar 05, 2026
Common Era Honors ‘Difficult Women’ in Collection

The ever-growing collection, which just expanded with the addition of Olga of Kyiv, features cameos of 12 women from history.

Diamond engagement rings by designer Lorraine West
TrendsMar 05, 2026
Engagement Ring Trends 2026: What’s In, and Why

We asked a jewelry historian, designer, bridal director, and wedding expert what’s trending in engagement rings. Here’s what they said.

TopImageCrop.jpg
Brought to you by
Is This You? Every Jeweler Has This Problem; We Have the Solution.

Every jeweler faces the same challenge: helping customers protect what they love. Here’s the solution designed for today’s jewelry business.

American Gem Society Conclave 2026 Orlando logo
Events & AwardsMar 05, 2026
AGS Announces Conclave 2026 Speaker Lineup

The annual event will be held in Orlando, Florida, from Sept. 14-17.

Weekly QuizFeb 26, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Caitríona Balfe on Only Natural Diamonds Spring 2026 Issue Cover
TrendsMar 05, 2026
Caitríona Balfe Fronts Only Natural Diamonds Cover

The “Outlander” star modeled for the digital cover of the magazine’s spring issue, which features a story on her relationship with jewelry.

CIBJO Milan
MajorsMar 05, 2026
Registration Opens for CIBJO Centenary Congress

This year’s annual congress, which will mark the confederation’s 100th anniversary, will take place this fall in Italy.

dca-laptop.jpg
Brought to you by
DCA Enters a New Chapter in Jewelry Education

With refreshed branding, a new website, updated courses, and a pathway for growth, DCA is dedicated to supporting retail staff development.

Michael M Beverly Hills Flagship Interior Rendering
MajorsMar 04, 2026
Michael M Opens First Store

Beverly Hills was chosen as the location for the brand’s first store, designed as a “private residence for modern monarchs.”

Dubai mall
Policies & IssuesMar 04, 2026
Luxury Brands Temporarily Shutter Middle East Stores

Kering, Apple, and other retailers have reportedly temporarily closed stores in the Middle East region in light of the recent conflicts.

JIS Miami Spring 2026
Events & AwardsMar 04, 2026
JIS Miami Spring Show to Feature New Gifts Pavilion, Pop-Up Trends Talks

Nearly half of buyers are prioritizing silver and fashion collections this season, organizers said.

Spinelli Kilcollin Live Now. Polish Later. Campaign
TrendsMar 04, 2026
Spinelli Kilcollin Rides Free In Year of the Horse Campaign

The “Live Now. Polish Later.” campaign features equestrians wearing the brand’s jewels while galloping across the icy plains of Kazakhstan.

Jennifer Ashworth
MajorsMar 04, 2026
LeachGarner Names New Brand Director

The precious metals provider has promoted Jennifer Ashworth to the role.

Johnny Nelson Wins David Yurman Gem Award Grant Graphic
Events & AwardsMar 03, 2026
Johnny Nelson Wins David Yurman Gem Awards Grant

Nelson will be honored as the inaugural grant winner at the Gem Awards gala on March 13.

New Forevermark store in India
SourcingMar 03, 2026
7 Trends That Could Define the Diamond Industry’s Future

Experts from India weigh in the politics, policies, and market dynamics for diamantaires to monitor in 2026 and beyond.

Gannon & Scott and Metalor Technologies employees
MajorsMar 03, 2026
Swiss Refiner Completes Acquisition of Gannon & Scott

The American precious metals refiner’s day-to-day operations remain the same post-acquisition.

Isabel Delgado aquamarine earrings
TrendsMar 03, 2026
Amanda’s Style File: Aquatopia

These aquamarine jewels channel the calming energy of the March birthstone.

AGTA Innovative Design Award
Events & AwardsMar 03, 2026
AGTA Adds Another New Category for Spectrum

The “Innovative Design” category and award will debut in the Spectrum division of this year’s AGTA Spectrum & Cutting Edge Awards.

Person pushing a shopping cart
SurveysMar 02, 2026
Consumer Confidence Edges Up in February

Consumers were somewhat less worried about the future, though concerns about rising prices and politics remained.

Rebecca Foerster
Events & AwardsMar 02, 2026
JVC to Honor Rebecca Foerster at Annual Luncheon

Foerster is this year’s Stanley Schechter Award recipient.

JFC facets 2026
Events & AwardsMar 02, 2026
JFC Names 2026 ‘Facets’ Honorees

Sponsorships and tickets to the annual fundraising event, set for May 31, are available now.

Faustino Alamo Dominguez and his son, Luis Angel Alamo, of Joyeria Angelo’s in Chicago
CrimeFeb 27, 2026
Man Charged in Murders of Father, Son Jewelers in Chicago

Chicago police and members of the U.S. Marshals Service tracked down the 35-year-old suspect earlier this week in St. Louis.

Ekapa mine
SourcingFeb 27, 2026
South African Diamond Mine Closes Amid Search for Missing Workers

Owners of the Ekapa Mine reportedly filed for liquidation about a week after a mudslide trapped five workers who have yet to be found.

Savannah College of Art and Design Bench Jeweler
MajorsFeb 27, 2026
Jewelers Mutual to Donate $10M to Savannah College of Art and Design

A 10-year alliance has also begun to address the shortage of bench jewelers through scholarships, enhanced programs, and updated equipment.

Renato Cipullo Splendente R Stone Letter Pendant
CollectionsFeb 27, 2026
Renato Cipullo Turns Gold into Hardstones

The “Splendente” collection has evolved to feature hardstone letter pendants, including our Piece of the Week, the onyx “R.”

Lady Wardington and diamond clip brooch
AuctionsFeb 26, 2026
Noonans to Auction Lady Wardington’s Jewelry

The jewelry collection belonged to “one of society's most glamorous and beautiful women of the mid-20th century,” said the auction house.

Rough diamonds from De Beers
SourcingFeb 26, 2026
Anglo American CEO Gives Insight Into De Beers Sale

The update came as Anglo took its third write-down on the diamond miner and marketer, which lost more than $500 million in 2025.

×

This site uses cookies to give you the best online experience. By continuing to use & browse this site, we assume you agree to our Privacy Policy