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

Elise & Amy Greenberg
IndependentsOct 15, 2026
Retailer Hall of Fame 2026: Amy and Elise Greenberg

For 40 years, sisters Amy and Elise Greenberg have helmed their 126-year-old family business, leading with appreciation and integrity.

The Retail Smiths Principal Partner Peter Smith
ColumnistsOct 15, 2026
Peter Smith: What Is the Culture REP?

It’s a term Smith coined and felt compelled to share following a bad experience with an aborted flight and an unfeeling flight attendant.

Stephanie Gottlieb Movado watches
WatchesOct 15, 2026
Stephanie Gottlieb’s New Movado Watches Are Made for Your Wrist Stack

Movado teamed up with the New York-based fine jewelry designer on a new collection of Movado Museum Velura watches.

1872 x 1052 Gemolite.jpg
Brought to you by
Meet Gemology’s Next Generation Microscope: GIA® Gemolite® NXT Professional Edition

Experience gemstones with greater precision and comfort than ever before.

Polished diamond in tweezers
SourcingOct 15, 2026
Signet Jewelers, Richemont May Join Bidder for De Beers, Report Says

The two companies are reportedly in talks to join the Global Diamond Consortium, led by former De Beers CEO Gareth Penny, as per Bloomberg.

Weekly QuizOct 08, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Wolf x Marla Aaron Some of the Things Box
CollectionsOct 15, 2026
Wolf x Marla Aaron's New Jewelry Box Is for Some (Not All) of Your Things

The “Some of the Things” box follows the two larger “Everything” box designs with the look and function of antique sewing and toolboxes.

Coleman Clark and Mitchell Clark
IndependentsOct 14, 2026
Retailer Hall of Fame 2026: Coleman and Mitchell Clark

Fourth-generation jewelers Coleman and Mitchell Clark exemplify the best qualities of their predecessors: humility, modesty, and confidence.

Cover.jpg
Brought to you by
Your Piece Could Be the One Editors Talk About

Submit your pieces for a chance to win in this year's competition.

Manual Marcial de Gomar
SourcingOct 14, 2026
Manuel Marcial de Gomar, ‘The Emerald Whisperer,’ Dies at 90

The gem hunter, whose 70-year career was defined by adventure and exploration, is remembered for his steadfast faith and sense of wonder.

Tiffany & Co.’s Blue Box Café by Daniel Boulud at South Coast Plaza
FinancialsOct 14, 2026
LVMH’s Jewelry Brands Turn in ‘Very Good’ Performance in Q3

Tiffany & Co. continued its full-scale store renovation project while Bulgari’s high jewelry collection generated “record-breaking revenue.”

Chicago Responsible Jewelry Conference 2026 Graphic
Events & AwardsOct 14, 2026
Chicago Responsible Jewelry Conference Releases 2026 Program

This year’s sessions feature leading voices from human rights, legal, and conservation organizations.

Lugano Diamonds Greenwich Connecticut store
MajorsOct 13, 2026
David Webb Owner Purchases Lugano Jewelry

The high-end jewelry retailer was sold to private investment firm Middle West Partners and a group of longtime clients.

Stephanie Gottlieb Wholesale Lab-Grown Collection
Lab-GrownOct 13, 2026
Stephanie Gottlieb Takes Lab-Grown Diamond Collection Wholesale

The jewelry designer has partnered with Sofer Jewelry to distribute her 85-piece lab-grown diamond collection.

Sean Dunn
IndependentsOct 13, 2026
Retailer Hall of Fame 2026: Sean Dunn

Dunn, this year’s Single-Store Independent inductee, is passionate about innovation and telling the story of natural diamonds.

Bulgari pink diamond
AuctionsOct 13, 2026
Christie's Geneva To Auction 'Bulgari Pink' Diamond

The 24-carat fancy intense pink diamond ring could fetch up to $18 million at the November sale.

Greenwich St. Jewelers Island Jewel candle
IndependentsOct 13, 2026
Greenwich St. Jewelers’ New Candle Smells Like Home

The “Island Jewel” candle honors New York City and Puerto Rico and raises money for the island’s water relief efforts.

TechnologyOct 13, 2026
GemFind Is a New JA Member Benefit Partner

The partnership will give JA members access to preferred pricing, exclusive benefits, technology solutions, education, and resources.

Stock image of a person holding holidays bags
SurveysOct 09, 2026
These Will Be the 10 Busiest Days for In-Store Shopping This Holiday Season

Stores should expect to see the most customers on Nov. 27, and Christmas week is expected to be hectic too, as Dec. 25 falls on a Friday.

Elisa Solomon x Serendipity 3 Frozen Hot Chocolate Charm
CollectionsOct 09, 2026
Elisa Solomon Collabs With Serendipity 3 on ‘Frozen Hot Chocolate’ Charm

The charm, our Piece of the Week, features brown diamond frozen hot chocolate topped with white diamond whipped cream and a ruby straw.

8 carat fancy blue diamond
AuctionsOct 09, 2026
8-Carat Blue Diamond Goes Unsold at UK Jewelry Auction

The top lot of Elmwood’s recent fine jewelry sale in London was a 1.84-carat, D color Tiffany & Co. solitaire diamond ring.

Ebel sport classic watch
WatchesOct 09, 2026
Movado to Sell Majority Stake in Ebel for $66.5M

The watch company agreed to sell a 95 percent interest to a group comprised of F.P. Journe, Chanel, and Swiss watch exec Pierre Jacques.

Stock image of paper money and coins
Policies & IssuesOct 08, 2026
Third Wave of IEEPA Tariff Refunds Begins

This round of tariff refunds is for importers that have sued over IEEPA tariffs in the Court of International Trade and won.

Brent Neale Back to Basics Collection Pink Garnet Capsule
CollectionsOct 08, 2026
Brent Neale’s New Collection Goes ‘Back to Basics’

It revisits the brand’s most requested silhouettes, from "Pillow"-set necklaces and bracelets to "Signature"-set rings and earrings.

Ethical Gem Fair Brooklyn
SourcingOct 08, 2026
Ethical Gem Fair Heads Back to Brooklyn

The trade-only event includes buying opportunities as well as educational sessions on artisanal mining, the new Paraíba source, and more.

Ara Chanakian Overall Design Winner
Events & AwardsOct 08, 2026
Pattons Fine Jewelry Sweeps Local Design Contest

Ara Chanakian, a jeweler at Pattons, took home top honors in every category at Jewelers of Louisiana’s annual jewelry design competition.

Reba McEntire belt buckle
AuctionsOct 08, 2026
Reba McEntire’s Jewelry, Watches Head to Julien’s Auctions

The live charity benefit sale in Nashville will also feature gowns, boots, and other memorabilia from the country music legend.

overnght sb 1026.png
Supplier BulletinOct 08, 2026
Overnight Mountings’ Bridal Builder Helps Jewelers Turn Custom Design into a Hands-On Selling Experience

Sponsored by Overnight Mountings

×

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