2025 Crown Jewels Series: Williamson Diamond Brooch – Pure Gold Coin with Pink Tourmaline and Diamonds

• Ultra-Limited Mintage: Only 225 coins worldwide, a pinnacle of exclusivity.

• Perfect Grading: Graded PR70 by PCGS, showcasing flawless craftsmanship.

• Signed by Artist: Hand-autographed by Steven Rosati, designer of King Charles III’s effigy.

• First Day of Issue: FDOI designation amplifies collectible prestige.

• Luxurious Gemstones: Adorned with a 0.50-carat pink tourmaline and 28 diamonds.

A Royal Masterpiece

Behold the 2025 Crown Jewels Series: Williamson Diamond Brooch Pure Gold Coin, a breathtaking tribute to one of Queen Elizabeth II’s most cherished jewels. Crafted by the Royal Canadian Mint, this 99.99% pure gold coin reimagines the iconic Williamson Diamond Brooch, gifted to then-Princess Elizabeth in 1947 by Canadian geologist John Thoburn Williamson. Graded PR70 by PCGS, hand-signed by Steven Rosati, and designated First Day of Issue, this coin is a numismatic treasure, blending royal heritage, Canadian pride, and unparalleled artistry. With a mintage of just 225, it’s a must-have for elite collectors.

Exquisite Design

The reverse, inspired by the brooch’s five-petalled jonquil flower, features a platinum-plated sterling silver mount set with a 0.50-carat AAA-grade Fancy Pink tourmaline and 28 round-cut diamonds (0.41 carat total). These gemstones, crafted by Beverly Hills Jewellers, capture the brilliance of the original 23.6-carat pink diamond and 203 white diamonds. Engraved floral accents, also platinum-plated, enhance the design’s elegance. The obverse bears the effigy of His Majesty King Charles III, designed by Steven Rosati, whose signature elevates this coin’s provenance. Selective platinum plating extends to the effigy, creating a cohesive, regal aesthetic.

Why Collect This Coin?

This coin is a rare fusion of luxury and history. The PR70 grade ensures a perfect proof finish, while Rosati’s autograph and FDOI status add unmatched exclusivity. Encapsulated in a premium wooden case with a black beauty box, it includes a serialized certificate and a gemstone authenticity certificate. The Williamson Diamond Brooch, worn by Queen Elizabeth II for her Silver Jubilee and royal weddings, is immortalized in this coin, making it a prized addition for collectors of royal memorabilia, gemstone coins, or Canadian heritage pieces.

Detailed Overview

Introduction to the Coin

The 2025 Crown Jewels Series: Williamson Diamond Brooch Pure Gold Coin is the second release in the Royal Canadian Mint’s prestigious Crown Jewels series, launched in 2024 to celebrate the Royal Family’s heirloom brooches. This coin honors the Williamson Diamond Brooch, a floral masterpiece centered on a 23.6-carat pink diamond from Tanzania, gifted to Princess Elizabeth in 1947. Completed in 1953, the year of Queen Elizabeth II’s coronation, the brooch graced her wardrobe for seven decades, appearing at state events, the 1977 Silver Jubilee, and royal weddings. With a mintage of only 225, PR70 grading, Steven Rosati’s signature, and FDOI designation, this coin is a numismatic marvel.

Artistic and Design Elements

The reverse meticulously recreates the brooch’s jonquil flower, with a platinum-plated sterling silver mount as its centerpiece. A 0.50-carat round-cut Fancy Pink tourmaline, graded AAA for quality, stands in for the brooch’s pink diamond, radiating vibrant hues. Surrounding it, 28 round-cut diamonds (0.41 carat total) evoke the original’s sparkle, set by Beverly Hills Jewellers for precision and brilliance. Engraved floral accents, inspired by the brooch’s design, flank the mount and are also platinum-plated, enhancing the coin’s luxurious sheen. The proof finish highlights the intricate engravings, with a mirror-like field and frosted relief.

The obverse features the effigy of His Majesty King Charles III, designed by Canadian artist Steven Rosati, whose hand-signed autograph adds a personal touch. Platinum plating on the effigy and surrounding floral motifs ties the obverse to the reverse, creating a harmonious design. The coin’s 38 mm diameter and 60.08-gram weight provide ample space for these intricate details, making it a visual and tactile delight.

Unique Collectible Features

This coin’s exclusivity is unmatched. The PR70 grade from PCGS signifies a flawless coin with perfect proof quality, showcasing brilliant contrast between the polished fields and frosted devices. The First Day of Issue designation marks it as one of the first struck, a feature highly sought by collectors. Steven Rosati’s hand-signed autograph, as the designer of the King Charles III effigy, connects the coin to Canada’s numismatic legacy, adding significant provenance. The inclusion of a 0.50-carat pink tourmaline and 28 diamonds, certified for authenticity, elevates its status as a luxury collectible, rivaling the opulence of the original brooch.

The low mintage of 225 ensures extreme rarity, and the coin’s connection to the Williamson Diamond Brooch—a Canadian gift worn by Queen Elizabeth II at iconic moments—adds historical weight. The platinum-plated mount, crafted with precision, mirrors the brooch’s platinum setting, while the gemstones replicate its sparkle, making this coin a faithful tribute to a royal treasure.

Why This Coin Matters

The 2025 Williamson Diamond Brooch coin is a celebration of royal elegance, Canadian heritage, and numismatic innovation. Its design, inspired by a brooch worn by Queen Elizabeth II for decades, captures a piece of history, while the Royal Canadian Mint’s use of pure gold, platinum plating, and genuine gemstones redefines luxury in coinage. With only 225 coins minted, the PR70 grade, Rosati’s signature, and FDOI status make it one of the most elite releases of 2025. For collectors of royal memorabilia, gemstone coins, or Canadian masterpieces, this coin is a once-in-a-lifetime opportunity to own a tangible link to monarchy and artistry.