Few gemstones captivate collectors and connoisseurs like Alexandrites, the rare chrysoberyl renowned for its mesmerizing color change. From green in daylight to reddish-purple under incandescent light, Alexandrites are both a natural marvel and a prized possession. In recent years, Alexandrites of exceptional quality and size have fetched staggering sums at auctions worldwide. Here, we explore some of the most remarkable sales, including record-breaking pieces and their price-per-carat analysis:

1. An Exceptional 16.53 ct Alexandrite and Diamond Ring

Also sold at Sotheby’s in December 2024, this ring featured a 16.53-carat oval Alexandrite. Accompanied by detailed reports from AGL and Gübelin, the gem displayed strong color change and high clarity. The final price of $1,920,000.00 USD set a new benchmark for Alexandrite rings, with a price of Approximately $115,000 per carat. This sale underscores the rarity of large, untreated Brazilian Alexandrites. We believe this stone sold for its size and clarity in particular as we had the privilege of looking at it in person.

‍2. An Exceptional Pair of Alexandrite and Diamond Earrings 15.07 ctw.

Sold by Sotheby’s in December 2024 for $1,200,000.00 USD, this pair featured two oval-shaped Alexandrites weighing 7.69 and 7.38 carats. Originating from Brazil and accompanied by AGL and Gübelin reports confirming no treatment, these gems showcased exceptional color change and saturation. With a combined weight of 15.07 carats, with a price of Approximately $80,000 price per carat , this sale highlights the high demand for untreated Brazilian Alexandrites of significant size and quality.

3. 10.84-Carat Alexandrite Chrysoberyl and Diamond Ring

At a Phillips auction in October 2024, this Brazilian Alexandrite sold for HKD 7,620,000 (Hong Kong Dollars) which is approximately $973,077 USD. Known for its strong color change and no indications of treatment, this 10.84-carat gem achieved a price of about $90,000 per carat.

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4. Oscar Heyman’s 10.20-Carat Alexandrite and Diamond Ring

In December 2022, Christie’s featured this masterpiece, selling it for $730,800 USD against an estimate of $300,000 to $500,000. with a price of Approximately $70,000 per carat.

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5. Oscar Heyman’s Alexandrite 9.92 ct Parrot Brooch

In the same December 2022 auction, an exquisite clip-brooch designed as a parrot with a 9.92-carat Alexandrite fetched $630,000 USD. The price per carat- $63,505!

6. 6.48-Carat Alexandrite and Diamond Ring

At a Christie’s auction in November 2022, this Brazilian Alexandrite achieved a price of HKD 1,701,000 Hong Kong Dollars (approximately $218,000 USD with a price of Approximately $33,000 per carat. The slight discrepancy was likely due to the under 7 Ct size, and overall quality of stone.

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Why Alexandrites Are So Coveted?

Discovered in Russia in the early 19th century, Alexandrites are rare due to their geological conditions. Brazil, Ceylon, Madagascar, Tanzania and East Africa occasionally produce the finest specimens, with Brazilian gems being the most popular at auction. Why? Most collectors and industry members understand the origin as special and esteemed for their vivid color change and clarity. As mines deplete, the scarcity and value of Alexandrites continue to grow regardless of origin.

Owning an Alexandrite isn’t just about having a gemstone; it’s about possessing a piece of nature’s most rare and beautiful gemstones. Whether you’re a collector or a connoisseur, these gems are timeless investments that combine rarity, beauty, and historical significance.

For more on Alexandrites and other fine gemstones, explore our exclusive collection. Let us help you find your next masterpiece.