Christie's is one of the world's two pre-eminent fine-art and jewellery auction houses, founded in London in 1766 by James Christie and today headquartered at King Street, St James's. Alongside Sotheby's, it dominates the international market for exceptional gemstones, historic jewellery, and signed pieces by the great maisons. Its twice-yearly Magnificent Jewels sales — held in Geneva, New York, and Hong Kong — function as global price-discovery events, and the hammer prices achieved there are routinely cited as primary comparables by independent appraisers, estate valuers, and gemmological laboratories worldwide. Christie's is currently owned by Groupe Artémis, the holding company of the Pinault family.

History and founding

James Christie held his first sale on 5 December 1766 at premises in Pall Mall, London. From its earliest decades the house cultivated relationships with aristocratic and royal vendors, establishing a reputation for discretion and connoisseurship that persisted through the nineteenth and twentieth centuries. The firm remained privately held for most of its history before passing through several ownership structures; Groupe Artémis acquired a controlling interest in 1998, providing the capital base that enabled Christie's to expand its saleroom network across Asia and the Americas.

The house's jewellery department grew in stature through the mid-twentieth century as dispersals of European royal and aristocratic collections became more frequent. By the 1980s, Christie's Geneva had established itself as the single most important venue for the sale of important coloured gemstones and signed jewellery, a position it has maintained into the present day.

Magnificent Jewels sales

The Magnificent Jewels franchise — the branded title Christie's applies to its flagship jewellery auctions — takes place twice yearly in Geneva (typically May and November), with additional sales in New York and Hong Kong calibrated to regional collecting tastes and the rhythms of the Asian market. The Geneva sales in particular attract consignments of the highest calibre: stones accompanied by reports from Gübelin Gem Lab, the Swiss Gemmological Institute (SSEF), and the Gemmological Institute of America (GIA), often with additional country-of-origin opinions from Lotus Gemology or other specialist laboratories.

Catalogue entries for important lots are among the most detailed in the trade. A significant ruby or sapphire will typically be described with its weight to the nearest hundredth of a carat, its origin determination ("Kashmir, no indications of heating" being the most commercially consequential), its colour description using standardised terminology, and a full provenance trail where available. These catalogues serve a secondary function as reference documents long after the sale has closed.

Record-breaking gemstone sales

Christie's auction archive documents a succession of world auction records for individual gemstones and jewels. Among the most significant:

• The Oppenheimer Blue (2016, Geneva): A 14.62-carat fancy vivid blue diamond, rated by the GIA as the largest fancy vivid blue diamond ever to appear at auction at the time of its sale. It achieved $57.5 million (approximately $3.93 million per carat), setting a world auction record for any blue diamond and for any diamond sold at auction at that date.
• The Elizabeth Taylor Collection (2011, New York): Dispersed across two sessions, the collection realised in excess of $137 million in total, far exceeding pre-sale estimates. Highlights included the 33.19-carat Krupp Diamond (a cushion-cut D-colour stone renamed the Elizabeth Taylor Diamond), which sold for $8.8 million, and the La Peregrina pearl, a historically documented natural pearl of Baroque provenance, which achieved $11.8 million.
• The Duchess of Windsor Jewels (1987, Geneva): The sale of jewellery assembled by Wallis Simpson, Duchess of Windsor, realised approximately $50 million — a figure that shocked the market at the time and demonstrated the premium commanded by documented royal and aristocratic provenance. Pieces by Cartier, Van Cleef & Arpels, and other leading maisons were represented throughout.
• The Raj Pink (2017, Hong Kong): A 37.30-carat fancy intense pink diamond that achieved $71.2 million, setting a world auction record for any gemstone sold in Asia at that time.

These results are not merely headline figures; they establish reference points that influence the private market, insurance valuations, and the pricing of comparable stones for years after each sale.

Role in the gemstone trade

Christie's occupies a structural position in the coloured-gemstone market that extends beyond its function as a seller. The house's specialist jewellery departments — staffed by gemmologists and jewellery historians — conduct condition and authenticity assessments, commission laboratory reports, and in some cases facilitate the re-cutting or re-polishing of stones prior to sale. The resulting catalogue descriptions, once published, enter the public record and are archived on the Christie's website, making them accessible to researchers, dealers, and collectors indefinitely.

The auction process itself provides a form of price transparency that the private dealer market does not. When a Kashmir sapphire of a given weight and quality achieves a specific hammer price in a competitive Geneva sale, that figure becomes a documented comparable — cited in appraisal reports, referenced in insurance schedules, and used by dealers pricing equivalent stones in private transactions. In this sense, Christie's (alongside Sotheby's) functions as a de facto pricing authority for the upper tier of the gemstone market.

The house also plays a role in authenticating provenance. A stone that can be traced through Christie's sale records — with lot numbers, catalogue descriptions, and buyer information where disclosed — carries a documented chain of custody that adds material value. This is particularly significant for historically important pieces, where provenance can be as commercially relevant as the stone's intrinsic gemmological qualities.

Catalogues and research resources

Christie's maintains a publicly accessible online archive of past sale results, searchable by category, date, and keyword. For researchers working on the history of specific jewels, tracing the dispersal of named collections, or establishing auction comparables for valuation purposes, this archive is an indispensable primary source. Printed catalogues from major sales, particularly the Geneva Magnificent Jewels editions from the 1980s onward, are themselves collected as reference works by specialists in the field.

The house periodically publishes longer-form research through its specialist departments, including essays on gem origins, the history of particular jewellery periods, and profiles of notable designers. These contributions, while produced for commercial purposes, are generally held to a standard of accuracy consistent with their role in supporting high-value transactions.

Further reading

• Christie's Jewellery Department — christies.com
• Gems & Gemology — gia.edu