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Diamond Jewelry Consignment
Sotheby’s is the premier global destination for buying and selling diamond jewelry. From stunning diamond engagement rings to enchanting blue diamonds, Sotheby's ensures the highest level of reliability when it comes to evaluations and estimates provided for your diamond jewelry. Our network of specialists and gemologists in major global cities, such as Hong Kong, Geneva, Paris, London and New York, provide their professional expertise to evaluate and position your diamond jewelry for success through our Auction or Marketplace channels.
On June 7, 2024, Sotheby's sold an impressive Graff 21.54ct Oval Cut Type IIa Diamond Ring, which received one of the highest bids during the June 2024 Magnificent Jewels Auction. Sotheby's is proud to hold the current auction record for the highest price paid for any diamond or jewelry creation and continues to provide sellers with a level of expertise and knowledge that reflects in the success of such monumental sales.
On December 11, 2024, Sotheby’s sold a rare internally flawless Harry Winston 9.52ct Round Brilliant Cut Fancy Intense Yellow Diamond Ring set with classic tapered baguette side-stones. Often, Fancy Yellow Diamonds are classically cut into a cushion or radiant shape, making this exquisite Internally Flawless, Fancy Intense Yellow Diamond of even greater value and limited supply.
On October 5, 2023, Sotheby’s sold an extraordinary Type IIb 11.28ct Fancy Vivid Blue Diamond Ring embellished with brilliant-cut white and pink-tint diamonds. Diamonds of this color and caliber make up less than 0.5% of all diamonds in known existence.
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Contact Us
GENEVA: +41 22 908 4849 or genevajewels@sothebys.com
NEW YORK: +1 212 606 7392 or newyorkjewels@sothebys.com
HONG KONG: +852 2822 8112 or hongkongjewels@sothebys.com
LONDON: +44 (0)20 7293 6409 or londonjewels@sothebys.com
PARIS: +33 (0)1 5305 5237 / 5201 or bijouxparis@sothebys.com
MILAN: +39 22 950 0201 or milanjewels@sothebys.com
Selling Diamonds with Sotheby’s is Simple
Diamond Jewelry at Sotheby’s
Frequently Asked Questions
- How much is a diamond worth?Sotheby's specialists will carefully and thoughtfully provide an estimate for your diamond based on carat weight, color, clarity, cut, fluorescence, rarity, and overall market value. While each diamond is unique, Sotheby’s adheres to grading diamonds parallel to the Gemological Institute of America’s (GIA) global standards of diamond certification.
Carat is the standard unit of measure for a diamond’s weight, with one carat weighing the equivalent of 0.2 grams.
Color refers to the white to yellow to brown hues present in a diamond. Colorless diamonds are considered to fall within the D, E, and F grades and remain the most desirable for white diamond, while G - Z diamonds exhibit hues of yellow and brown.
Clarity refers to the presence or absence of inclusions and blemishes, ranging from internally flawless (IF) diamond that appear practically flawless until 10x magnification, to included (I) diamonds that often exhibit blemishes visible to the naked eye.
Cut determines a diamond’s radiance and sparkle with a grading system that ranges from “Excellent” to “Poor.” To determine the quality of the cut, a gemologist will determine how successfully the stone reflects light by analyzing symmetry, proportion, and polish. - Where to Sell Diamonds?Sotheby’s is a leading platform when it comes to selling your precious diamond jewelry, closing historic diamond sales for some of the most magnificent stones discovered. Our team of expert gemologists ensure that your diamond is evaluated with the latest industry insights and tools. Furthermore, your diamond jewelry will be presented to a global platform of established collectors and buyers, ensuring that your consignments have the highest exposer for the opportunity to sell.
- How to Sell a DiamondSotheby’s offers multiple sales channels, including Sotheby’s Auction and Sotheby’s Buy-Now Marketplace. Sotheby’s Auction is preferable for incredibly high value diamonds or jewelry with greater fluctuations in pricing potential due to rarity. This model inherently poses greater risk or reward to the seller based on the market during the time of auction. Alternatively, Sotheby’s Buy-Now Marketplace guarantees a set net payout to sellers prior to any sales, eliminating any risk in selling for lower than desired. Additionally, Buy-Now Marketplace provides sellers with an extended period of sale (90 days) and, upon discussion, the opportunity for an extended listing time as well.
To receive a complimentary estimate for your diamond jewelry, submit an estimate form to be directly reviewed by our specialists.