Is $7,900 a good price for this ring?

It is well below the stated $12,500 retail. For a Tiffany-certified 0.90 ct VS2 platinum solitaire, that is a strong discount, though you are buying pre-owned.

What is the difference between the 0.90 ct and 1.46 ct figures?

The listing title and certificate describe a 0.90 ct center stone. The 1.46 TCW and 1.13 ct figures appear in the spec block, so confirm which stone you are buying before paying.

Can the ring be resized?

It is listed as size 5.25 and sizable. Platinum resizing is routine, but a full reset can cost several hundred dollars and may affect the band's diamonds.

What comes in the box?

The Tiffany box, pouch, valuation report and Tiffany Diamond Certificate (number C512290266). Original papers are included.

Is an I color, VS2 diamond good?

VS2 means inclusions are hard to see under magnification, and I color is near-colorless. In a platinum solitaire, most shoppers find that combination looks white.

When is the best time to buy?

Pre-owned Tiffany pieces are priced individually, so watch this listing and compare against other certified 0.90 ct platinum solitaires. The $7,900 price at 1stdibs.com was the best new price as of November 4, 2026.

Where is the Tiffany & Co Diamond Ring cheapest?

At 1stdibs.com, for $7,900.00, as of our latest check.

What do buyers say about the Tiffany & Co Diamond Ring?

Rated 4.9 out of 5 from 95 ratings. Buyers like: Seller rated 4.9 from 95 reviews; Recognized Seller and Platinum Seller status; Established in 2012, 1stDibs seller since 2017 with 713 sales.

Where can I buy the Tiffany & Co Diamond Ring?

5 stores we checked sell it, including 1stdibs.com, The RealReal, Macy's, eBay, myGemma.

Tiffany & Co.

Tiffany & Co Diamond Ring

4.9

Best price now

$7,900.00at 1stdibs.comObserved at 1:16 AM

Compared across 5 stores. Prices are checked against each store and labelled with when.

Visit 1stdibs.com

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Our take on the Tiffany & Co Diamond Ring

A pre-owned Tiffany & Co. platinum solitaire engagement ring with a 0.90 ct round brilliant center diamond (I color, VS2 clarity) and a diamond band. It comes with the Tiffany Diamond Certificate, box, pouch and valuation report, and was made in 2012. The best new price is $7,900 at 1stdibs.com as of November 4, 2026, against a stated retail of $12,500.

What reviewers say

The 4.9 rating from 95 reviews reflects the 1stdibs seller, not the ring itself. Buyers describe the seller as reliable and responsive.

Pros

Recognized and Platinum Seller status
713 sales since 2017
Fast response, about 9 hours
Accurate listings and condition

Cons

Reviews cover the seller, not the ring's wear
Limited feedback on long-term stone setting

About the Tiffany & Co Diamond Ring

Tiffany & Co. 0.9 ct Round Brilliant Diamond Engagement Ring

PRIMARY DETAILS

SKU: 158062

Listing Title: Tiffany & Co. 0.9 ct Round Brilliant Diamond Engagement Ring

Condition Description: Since Charles Lewis Tiffany opened his doors in New York in 1837, Tiffany & Co. has been America's most enduring symbol of luxury. From the iconic blue box to the countless creative collaborators that made the brand’s line-up what it is today, it’s no surprise many turn to Tiffany & Co. to celebrate life’s biggest moments.

Retails for $12,500 USD. In excellent condition. Ring size is 5.25. Comes with Box, Pouch, Valuation Report, Tiffany Diamond Certificate.

Brand: Tiffany & Co.

Metal Type: Platinum

Metal Purity: 950

Ring Size: 5.25

Pre-Owned Jewelry Condition: Pristine

CENTER STONE INFORMATION

Center Stone 1 Type: Diamond

Center Stone Weight 1 (cts): 0.90

Center Stone 1 Shape: Round Brilliant

Center Stone 1 Color: I

Center Stone 1 Clarity: VS2