World’s Most Expensive Gemstone Price: When Was the Most Valuable Gem Ever Sold?
by Nasir Ahmad on Apr 24, 2026
World’s Most Expensive Gemstone Price: When Was the Most Valuable Gem Ever Sold?
The world of rare gemstones has always fascinated collectors, investors, and jewelry enthusiasts. Among all precious stones ever auctioned, one gemstone stands above the rest in both prestige and price: the legendary The Pink Star.
This extraordinary diamond holds the record as the most expensive gemstone ever sold at auction, setting a benchmark that remains unmatched in the gemstone industry.
What Is the World’s Most Expensive Gemstone Ever Sold?
The most expensive gemstone ever sold at auction is the Pink Star Diamond, a flawless 59.60-carat fancy vivid pink diamond.
It sold for an astonishing $71.2 million at a Sotheby’s auction in Hong Kong on April 4, 2017. This historic sale established a world record for the highest price ever paid for a gemstone at auction.
The Record-Breaking Sale of the Pink Star Diamond
Originally mined by De Beers in Africa in 1999, the Pink Star was cut from a 132.5-carat rough diamond.
The cutting and polishing process took nearly two years, resulting in one of the finest pink diamonds ever discovered. Its vivid color, flawless clarity, and exceptional size make it truly one of a kind.
After intense bidding at Sotheby’s Hong Kong, the diamond was purchased by Hong Kong jewelry giant Chow Tai Fook Enterprises, which later renamed it the CTF Pink Star.
Why Is the Pink Star So Valuable?
Exceptional Rarity
Pink diamonds are among the rarest gemstones on Earth. Only a tiny fraction of all diamonds possess a natural pink hue.
Extraordinary Size
At 59.60 carats, the Pink Star is exceptionally large for a fancy vivid pink diamond.
Flawless Clarity
It received the highest possible clarity grading, making it virtually perfect.
Historic Significance
Its auction set a global benchmark for gemstone value and luxury investment.
Top Most Expensive Gemstones Ever Sold at Auction
- Pink Star Diamond – $71.2 million (2017)
- Oppenheimer Blue Diamond – $57.5 million (2016)
- De Beers Cullinan Blue – $57.5 million (2022)
- Estrela de Fura Ruby – $34.8 million (2023)
- Sunrise Ruby – $30.3 million (2015)
What Makes a Gemstone So Expensive?
Several factors determine a gemstone’s value:
- Rarity
- Color intensity
- Clarity
- Carat weight
- Cut quality
- Origin
- Historical provenance
- Market demand
The rarer and more visually exceptional the gemstone, the higher its market value.
Are Rare Gemstones a Good Investment?
High-quality natural gemstones have become increasingly attractive as alternative investments.
Collectors and investors often seek:
- Rare colored diamonds
- Burmese rubies
- Kashmir sapphires
- Colombian emeralds
- Fine spinels and Paraíba tourmalines
Unlike mass-produced assets, rare gemstones are finite, portable, and globally recognized stores of value.
Why Collectors Pay Millions for Rare Gems
Rare gemstones combine beauty, scarcity, and prestige. They are:
- Wearable assets
- Portable wealth
- Inflation-resistant collectibles
- Highly sought after by global buyers
For ultra-high-net-worth collectors, owning a world-class gemstone is both an investment and a statement of legacy.
Why Choose OneStep Gems for Fine Gemstones
At OneStep Gems, we specialize in sourcing natural, ethically obtained gemstones from renowned origins worldwide.
Our collection includes:
- Rare tourmalines
- Fine aquamarines
- Vibrant topaz
- Collector-grade amethysts
- Exceptional garnets and citrines
Every gemstone is carefully selected for quality, authenticity, and long-term value.
Explore our premium collections:
- Natural Loose Gemstones
- Collector Gemstones
- Investment-Grade Colored Stones
- Rare Tourmaline Collection
Frequently Asked Questions
What is the most expensive gemstone ever sold?
The Pink Star Diamond holds the record at $71.2 million.
When was the Pink Star sold?
It was sold on April 4, 2017, at Sotheby’s Hong Kong.
Who bought the Pink Star Diamond?
It was purchased by Chow Tai Fook Enterprises.
Why are pink diamonds so expensive?
Their rarity, vivid color, and limited supply make them extremely valuable.
Are colored gemstones a good investment?
Yes, rare, untreated, and high-quality gemstones often appreciate over time.
Final Thoughts
The Pink Star Diamond remains the undisputed champion of gemstone auctions, selling for a record-breaking $71.2 million in 2017. Its sale highlights the enduring appeal of rare gemstones as symbols of wealth, artistry, and investment.
As demand for exceptional gemstones continues to rise, rare colored stones remain among the world’s most treasured assets.
Whether you are a collector, investor, or jewelry enthusiast, the world of fine gemstones offers beauty, prestige, and lasting value.
