Technology

Pre-Owned Jewelry Companies Mondiamo and Circa Merge

TechnologyJul 31, 2019

Pre-Owned Jewelry Companies Mondiamo and Circa Merge

The newly-formed company will combine Mondiamo’s digital platform with Circa’s physical presence.

20190731_Circa.jpg
Mondiamo valued the global market for pre-owned fine jewelry and watches at $8 billion per year.

New York—Pre-owned jewelry buyers Mondiamo and Circa announced a merger Monday, joining forces to claim a bigger piece of the secondary luxury market.

The financial terms of the deal were not disclosed.

Each company will retain its name, a Mondiamo spokesperson confirmed to National Jeweler Tuesday.

Mondiamo valued the global market for pre-owned luxury jewelry and watches at $8 billion per year, projecting annual growth of 6 to 9 percent in the next few years.

The company said “sustained growth” in the market has been driven by consumers warming up to “recommerce” and the availability of digital platforms for buyers and sellers.

Circa’s specialty is in-person transactions through 12 physical locations, including offices in New York, Los Angeles, Madrid and Hong Kong.

Mondiamo, on the other hand, operates via a digital platform, offering customers cash for their jewelry sight-unseen and has an exclusive referral agreement with Blue Nile.

It was founded in 2017 by New York-based venture capital firm Adama Partners, which partnered with Bain Capital and Bow Street to take Blue Nile private in 2017.


Adama Partners co-founder Oren Schneider (left) will serve as the CEO of the combined company while Circa founder Richard Tilles will serve as president.

Adama Partners co-founders Oren Schneider and Ori Levy will head the combined company, with Schneider as CEO and Levy as executive chairman. Circa founder Richard Tilles will serve as president.

“By combining Mondiamo’s scalable business model, digital capabilities, data-driven processes and operational expertise with Circa’s jewelry knowledge, physical locations and brand equity, we plan to build the best global proposition for sellers of high-end jewelry and luxury watches,” Schneider said in a press release.
Lenore Fedowis the senior editor, news at National Jeweler, covering the retail beat and the business side of jewelry.

The Latest

Heavenly Vices Mother Father Spinner Necklace
TrendsOct 31, 2025
Piece of the Week: A Spinner Fit for ‘Frankenstein’

This “Mother Father” spinner necklace from Heavenly Vices Fine Jewelry draws inspiration from Victorian Era jewelry.

Interpol Stolen Works of Art Database, The Louvre Museum Graphic
CrimeOct 31, 2025
5 More Arrested in Louvre Heist, Jewelry Still Missing

The suspects were rounded up in Paris and its suburbs on Wednesday night, but none of the stolen jewels were recovered with them.

My Next Question webinar graphic
Recorded WebinarsOct 31, 2025
Watch: How to Master Google Reviews for Your Business

Experts share top tips on how to encourage positive reviews and handle negative feedback.

Supplier Spotlight -Recorded-Webinar.png
Brought to you by
Watch: Introducing GIA Jewelry Services

Supplier Spotlight Sponsored by GIA

GIA iD100® Technology
Supplier BulletinOct 30, 2025
Protect Your Customers and Your Business

Sponsored by the Gemological Institute of America

Weekly QuizOct 30, 2025
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Seattle PD image of Menashe & Sons Jewelers following Aug. 14 smash-and-grab robbery
CrimeOct 30, 2025
29-Year-Old Man Charged in Multiple Seattle-Area Smash and Grabs

The suspect faces charges in the August robbery of Menashe & Sons Jewelers and is accused of committing smash and grabs at two pawn shops.

Alison Lou Lumière Fine Collection On-Model
Lab-GrownOct 30, 2025
Alison Lou’s New Collection Uses Lab-Grown Diamonds and Resin

The “Lumière Fine” collection was born from designer Alison Chemla’s interest in the transformative power of light.

DEBEERS_DAY4_DSC_1023-01_1872x1052.jpg
Brought to you by
DESERT DIAMONDS: The Newest Trend in Natural Diamond Jewelry

From sunlit whites to smoky whiskeys, introduce your clients to extraordinary diamonds in colors as unique as their love.

Buddha Mama gold skull pave huggies
TrendsOct 30, 2025
Amanda’s Style File: A Haunted Halloween

Show off your spooky side with these 12 festive jewels.

Is This Love That I’m Feeling event imagery
Events & AwardsOct 30, 2025
Jewelers Mutual to Host Jewelry Panel at Frazier History Museum

The “Brilliant & Beyond” panel coincides with the “Love & Marriage” exhibition curated by Davis Jewelers in Louisville, Kentucky.

Stock image of person holding shopping bags
Events & AwardsOct 29, 2025
October Brings Little Change to Consumer Confidence

Consumers are feeling more optimistic about their present situation while the short-term future remains a little scary.

Couture show
Events & AwardsOct 29, 2025
Couture Partners With Time to Watches

The company, which organizes a watch show in Geneva every spring, will bring a selection of watch brands to the 2026 Couture show in Vegas.

The Modern Guide to Vintage Jewelry by Beth Bernstein
TrendsOct 29, 2025
Beth Bernstein Releases Vintage Jewelry Guide

“The Modern Guide to Vintage Jewellery” follows the evolution of jewelry design from the ‘30s to the ‘80s with buying and styling advice.

Collage of bug jewelry
EditorsOct 29, 2025
Why Creepy, Crawly Bugs Inspire Beautiful Jewelry

For her annual Halloween story, Senior Editor Lenore Fedow explores the symbolism behind spiders, beetles, and other eerie insects.

Gem Awards 2025 at Cipriani New York
Events & AwardsOct 28, 2025
Meet the 2026 Gem Award Nominees

Notable jewelry designers, members of the press, and retailers are up for an award at next year’s gala.

Graphic for Jewelers of America’s 2025 State of the Industry webinar
Recorded WebinarsOct 28, 2025
Watch: The State of the Jewelry Industry

Leaders from Jewelers of America and National Jeweler discuss the gold price, tariffs, and more in this one-hour webinar.

Eriness One of One Collection Rings and Necklace
CollectionsOct 28, 2025
Eriness Reflects on Life in ‘One of One’ Collection

After experiencing motherhood, growth, and loss, founder and designer Erin Sachse has created 10 irreplaceable jewels.

Napoleon’s diamond brooch and a pearl and diamond hair ornament
AuctionsOct 27, 2025
Napoleon Left This Brooch Behind, And Now It’s Up For Auction

It is part of Sotheby’s “Royal & Noble Jewels” sale along with an ornate hair ornament and an old mine-cut light pink diamond ring.

Marie Louise’s emerald necklace and earrings stolen in the heist at the Louvre Museum
CrimeOct 27, 2025
Arrests Made in Louvre Jewel Heist

One of the individuals was apprehended at the airport as he was trying to flee the country.

Holiday shoppers in Target
MajorsOct 27, 2025
Target to Cut 1,800 Corporate Jobs

The retailer, which has faced struggling sales in recent quarters, is looking to streamline its operations.

Hill Management Group
Events & AwardsOct 27, 2025
Hill Management Group Hired to Help Atlanta Jewelry Show

Hill Management Group will oversee, market, and produce next year’s spring show.

Bonhams New Bond Street London flagship
AuctionsOct 24, 2025
Bonhams Under New Ownership, Top Executives Replaced

London-based investment firm Pemberton Asset Management acquired the auction house for an undisclosed amount.

De Beers Diamond View Zoom machine with monitor
GradingOct 24, 2025
DMIA to Hold Diamond Testing Instrument Demo

The workshop will give attendees the chance to try out and ask questions about three different diamond verification instruments.

Two brooches stolen in the October 2025 heist at the Louvre Museum in Paris
CrimeOct 24, 2025
Video Emerges of Louvre Jewelry Robbers Fleeing the Scene

The footage shows two of the jewelry heist suspects descending from the second floor of the museum and then escaping via scooter.

Wyld Box Jewelry Ray of Light Large Drop Earrings
CollectionsOct 24, 2025
Piece of the Week: Wyld Box Jewelry’s ‘Ray of Light’ Earrings

Founder and designer Rosanna Fiedler looked to a vintage Cartier clutch when designing the sunlight-inspired drop earrings.

Tiffany & Co. Bird on a Rock pendant
FinancialsOct 23, 2025
Jewelry Sales Resilient Despite Struggles at LVMH, Kering

The luxury conglomerates faced a challenging Q3 amid geopolitical and economic tensions.

Cullinan Diamond Mine plant
SourcingOct 23, 2025
Petra Diamonds Turns to Shareholders to Raise Capital

The struggling diamond mining company, which owns the historic Cullinan mine, has launched a rights issue to raise about $25 million.

×

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