Rare 17-Carat Diamond Ring to Be Auctioned Off for Up to $1 Million

The massive diamond, set in platinum and encrusted with smaller baguette-cut jewels, is considered one of the highest-quality stones on the market

A rarely-seen 17-carat diamond ring is going up for auction — and the winning bidder is expected to pay anywhere from $700,000 to $1 million.

British auction house Christie’s announced that the massive pear-cut diamond from American jeweler Harry Winston is up for auction online for from March 11 to March 21. According to the Gemological Institute of America’s (GIA) report on the stone, the brilliant-cut center diamond is 17.09 carats, has a rarely-seen D color rating — meaning it’s completely colorless — and both its polish and symmetry were classified as “excellent.”

Related: Jewelry Expert Shares Top 5 Tips for Navigating Engagement Ring Prices – and Budgeting for Their Dream Ring

Additionally, a letter from the GIA reported that the stone is a type IIa — “the most chemically pure type of diamond and often have exceptional optical transparency.” It scored a VVS2 clarity rating. VVS2 is the highest possible rating, and it means that a diamond has very minimal flaws.

The ring also has a platinum setting and features tapered baguette-cut diamonds and will be sold with a custom Harry Winston navy blue case, per Christie’s.

Also up for auction in the March Christie’s Online sale are 200 gemstones, including pieces from Cartier, Tiffany & Co. and Van Cleef & Arpels. Among them are a 8.2-carat blue sapphire ring, set to go for anywhere from $300,000-$500,000, and a 10.95-carat round brilliant-cut diamond set in gold, which will go for somewhere between $40,000-$60,000.

Several vintage, non-ring pieces are up for auction, too — Bulgari has multi-gem earrings, a brooch and jewelry sets for sale, some of which date back to the 1960s, currently going for between $1,000 and $12,000.

Related: From a Rihanna Performance to a Meal for 50,000 — Inside the Pre-Wedding Party for Billionaire Heir Anant Ambani

Per a March 6 press release, a majority of the pieces come from two private collections: A Fashionable Life: The Collection of an Elegant Lady and Property from the Collection of Fritz and Lucy Jewett.

“Additionally, the sale presents two charitable collections: Property Sold with the intent to Benefit the PBS Foundation and Property from the Collection of Nate Berkus, with proceeds supporting Financial Aid at Grace Church School located in New York City,” the release noted.

Check out the full collection here.

Expensive wedding items have had a moment over the past few weeks. In early March, Indian billionaire heir Anant Ambani's extravagant pre-wedding party went viral for its star-studded group of guests and performance from pop star Rihanna.

The many glamorous outfits from the three-day event included plenty of standout accessories, including the groom's reported luxury watch — a Richard Mille timepiece that the Daily Mail reported is a RMS-10 Tourbillon Koi Fish model featuring 18K rose gold and bezel set diamonds.

Related: Mark Zuckerberg and Wife Priscilla Chan Rave Over Indian Billionaire Anant Ambani's $1M Watch at Pre-Wedding Bash

The New York Post reported that the watch was worth an estimated $1 million.

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