Tiffany & Co: Appraisal and Auction of Your Jewelry

Diamonds, the blue box, and New York jewelry excellence for nearly two centuries: the value of Tiffany jewelry varies greatly depending on the design, the gemstones, and the age of the piece.

Below, you’ll find all our valuation guides dedicated to Tiffany & Co.—rings, necklaces, and iconic Tiffany & Co. jewelry pieces. Each guide details the price ranges observed at auction and the factors that determine a piece’s value before you entrust it to our state-certified auctioneers.

Tiffany & Co., the New York-based company that has become a global leader in diamonds

1837: A modest novelty shop in New York founded by Charles Lewis Tiffany

In 1837, Charles Lewis Tiffany, along with his partner John B. Young, founded a modest novelty and stationery shop in New York. At first, nothing suggested that this store would become the global leader in diamond jewelry that it is today.

It was only gradually, over the decades, that the company shifted its focus to silverware and then to fine jewelry, driven by its founder’s unwavering ambition to offer his American clientele craftsmanship on par with that of the great European houses.

The Blue Book, the first mail-order catalog dedicated to fine jewelry

A remarkable commercial innovation for its time, the Blue Book was published as early as the mid-19th century as the first mail-order catalog entirely dedicated to fine jewelry.

This annual publication, which is still in print today, attests to the company’s ability to combine artisanal excellence with a keen business sense—two qualities that largely explain its exceptional longevity in the luxury market.

1878: The acquisition of the 128.54-carat yellow diamond that made Tiffany the “king of diamonds”

The acquisition in 1878 of an exceptional 128.54-carat yellow diamond marked a decisive turning point in the company’s history. This stone, which has remained in the possession of Tiffany & Co. ever since and is rarely worn in public, earned Charles Lewis Tiffany the nickname “King of Diamonds ” and firmly established the brand’s gemological reputation, which the public now associates with the most rigorous expertise in precious stones.

The Tiffany Setting and the Designs That Shaped High Jewelry

1886: The six-prong setting that reinvented the solitaire engagement ring

The Tiffany Setting, patented in 1886, revolutionized the way a solitaire diamond is set. By elevating the stone with six slender prongs, this setting allows light to enter the diamond from every angle, enhancing its brilliance in a way that was unprecedented at the time.

This technical process, still widely used today throughout the jewelry industry, remains an integral part of the house’s identity and serves as a valuable identifying feature for experts authenticating vintage engagement rings.

Jean Schlumberger, Elsa Peretti, Paloma Picasso: designers who have become signatures of the house

Starting in the mid-20th century, Tiffany & Co. partnered with designers whose individual talents enriched the brand’s collective identity.

Jean Schlumberger, a French goldsmith with a flamboyant style, Elsa Peretti, whose organic, minimalist designs have left a lasting mark on contemporary jewelry, and Paloma Picasso, daughter of the painter, are among the signatures most sought after by collectors, with each of their creations commanding a distinct value within Tiffany’s own collection.

The Tiffany Blue Box and Tiffany Blue: a globally recognized identity

Tiffany Blue—a registered trademark since 1998 but in use since the 19th century—and its associated box, the Tiffany Blue Box, are instantly recognizable to any collector.

Beyond their function as packaging, these visual cues play a key role in a piece’s perceived value, and the presence of the original box is consistently factored into an appraisal.

How to Identify and Authenticate Tiffany & Co. Jewelry

Hallmarks, Engravings, and Serial Numbers: The Marks That Guarantee Authenticity

Depending on its age and the metal used, every piece of Tiffany & Co. jewelry bears an engraving indicating the brand name, the fineness of the precious metal, and—for many pieces—an internal serial number that allows the manufacturing period to be traced.

Examining these markings is the essential starting point for any authentication process conducted by an expert.

Diamond certificates, blue boxes, and original documentation

For diamond jewelry of a certain value, the company issues a gemological certificate detailing the stone’s characteristics. Retaining this document, along with the original blue jewelry box and the purchase receipt, significantly enhances a piece’s estimated value by offering the potential buyer a complete guarantee of traceability.

Distinguishing a vintage piece from a more recent creation

Distinguishing between a vintage piece and a more recent creation relies on a combined analysis of style, manufacturing marks, and, where applicable, the serial number.

The Schlumberger and Peretti collections from the 1960s through the 1980s feature clearly identifiable stylistic and technical characteristics, which the expert systematically compares to the brand’s available archives.

What Determines the Value of a Tiffany & Co. Jewelry Piece

Diamond Quality: The 4Cs and Gemological Expertise

The appraisal of a diamond-set piece of jewelry relies heavily on an analysis of the 4Cs: carat, which measures the stone’s weight; color; clarity; and cut, which determines the diamond’s brilliance. This internationally recognized framework serves as the technical foundation upon which experts rely to establish a value range consistent with current market conditions.

Rarity, age, and sought-after collections (Setting, Schlumberger, Peretti...)

Beyond the diamond’s quality alone, the rarity of the design and its inclusion in a sought-after collection significantly influence its value.

Vintage Schlumberger pieces, produced in limited quantities, or historic Setting creations accompanied by their original documentation, are thus valued higher than more common models from current production.

Condition, provenance, and the presence of the original case

The jewelry’s overall condition, the absence of deep scratches on the metal, the integrity of the setting, and the presence of the original case are additional determining factors.

Documented provenance—particularly when it links the piece to a purchase at a historic store—also bolsters the confidence of potential buyers and, consequently, the expected hammer price.

Key market figures: Vintage Tiffany Setting engagement rings generally sell for between 2,000 and 25,000 euros depending on the diamond’s weight, while the most sought-after pieces by Schlumberger or Peretti can fetch tens of thousands of euros at specialized auctions.

Engagement rings, wedding bands, solitaire rings: What’s the value based on the design?

Engagement rings and solitaire diamond rings: the most sought-after pieces

The solitaire engagement ring remains the brand’s most iconic piece, thanks to the fame of the Tiffany Setting. Its value depends directly on the weight and quality of the center diamond, but also on the age of the design, as older pieces often feature craftsmanship and finishes that set them apart from contemporary productions.

Women’s wedding bands, men’s wedding bands: What is the value of these everyday pieces?

Wedding bands, whether set with diamonds or plain, represent a more affordable yet still sought-after category in the pre-owned market.

Their value is based primarily on the weight of the precious metal and, where applicable, on the quality of the stones set in them; the Tiffany signature adds a modest but real premium compared to an unsigned wedding band.

White gold, yellow gold, rose gold: how do they affect the appraisal?

The choice of metal—white gold, yellow gold, or rose gold—has a moderate influence on a piece of jewelry’s appraisal, as the intrinsic value of the gold remains comparable across the different colors. It is market trends—which currently favor rose gold and yellow gold—that can, for pieces of equal quality, slightly drive up demand for one shade or the other.

Diamond necklaces, bracelets, and earrings: What is their value?

Diamond necklaces and bracelets: a blend of elegance and heritage value

Diamond-set necklaces and bracelets, particularly those from the Peretti or Schlumberger collections, combine timeless elegance with genuine heritage value. Their appraisal is based on the total weight of the set diamonds, the quality of the setting, and the recognition of the collection from which they originate.

Diamond Earrings: Timeless Pieces

Diamond earrings—whether solitaire studs or diamond-set hoop earrings—are among the most sought-after pieces due to their timeless appeal and ease of everyday wear. Their value naturally follows that of the set diamond, which is assessed according to the 4Cs.

Personalized Engraving: How Does It Affect the Piece’s Value and History?

A personalized engraving—common on jewelry given as a wedding or birthday gift—does not necessarily diminish a piece’s market value, although it may slightly reduce its appeal to some buyers. The appraiser takes this into account in their valuation, though this factor does not fundamentally call into question the intrinsic value of the metal and the stones set in the piece.

Get a Free Appraisal of Your Tiffany & Co. Jewelry

Auctie's offers all owners of Tiffany & Co. jewelry a free appraisal service, conducted by a state-certified auctioneer, within twenty-four hours.

A free, certified appraisal by a licensed auctioneer within 24 hours

This appraisal is based on a review of detailed photographs of the jewelry, supplemented if necessary by direct communication with the expert, to provide an estimate that accurately reflects current market conditions in the high-end diamond jewelry sector.

Information and photos needed for a reliable online appraisal

To enable the expert to provide an accurate appraisal, we recommend submitting the following:

Clear photographs of the piece from multiple angles, including any engravings and hallmarks

The diamond’s gemological certificate, if available

The original jewelry box and any proof of purchase

The approximate weight of the jewelry and, if known, the weight of the center stone

Remote Appraisal or In-Person Appointment: How the Process Works

The appraisal can be conducted entirely remotely, based on the information provided, or in person when the complexity of the piece warrants it. In either case, the process is free of charge and non-binding for the owner.

Selling Your Tiffany & Co. Jewelry at Auction

From the reserve price to the final bid: how the best price is determined

The auction begins with the setting of a reserve price consistent with the initial estimate. Bidders then place successive bids until the item is sold, a transparent process that guarantees the seller the best price possible given market conditions at the time of the sale.

Hôtel Drouot and Online Auctions: Reaching the Most Qualified Bidders

The reputation of Hôtel Drouot, combined with the growth of online auctions, allows us to reach an international audience of bidders who are particularly drawn to signed fine jewelry pieces, thereby ensuring optimal exposure for the jewelry being sold.

“Auctie’s appraised and then sold the Tiffany Setting engagement ring we had inherited. The service was thorough and transparent, and we were very satisfied with the sale price.” Client testimonial, sale conducted by Auctie’s.

Inheritance, gifting, life changes: What should you do with a piece of Tiffany & Co. jewelry you’ve inherited?

Inventory and Distribution of an Inherited Jewelry Collection

In the context of an estate, taking inventory of an inherited jewelry collection is an essential preliminary step before dividing the assets among the heirs. Engaging a certified appraiser helps establish an objective value for each piece.

Sell, Keep, or Pass On: Options After an Inheritance

Once the inventory is complete, several options are available to the heirs: keeping the piece for personal use, passing it on to the next generation, or selling it at auction. Auctie’s guides the owner through this decision-making process, without ever pressuring them into a hasty decision.

Confidentiality of the process and seller anonymity are preserved

Auctie’s guarantees every owner absolute confidentiality throughout the appraisal process, with anonymity maintained until the decision—if any—is made to proceed with a sale.

Glossary of Fine Jewelry and Tiffany & Co.

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