What is the most expensive gemstone ?

 Precious stones have fascinated for centuries with their rarity, brilliance, and inestimable value. Some of them reach dizzying prices, becoming treasures coveted by collectors and enthusiasts. Discover our top 5 most expensive precious stones in the world, where luxury and exclusivity meet.

1.Le Koh-i-Noor

• Name : Koh-i-Noor
• Price : Invaluable (~ 500 million)
• Type of gemstone : Colorless diamond
• Owner : British Crown

The Koh-i-Noor, which means "Mountain of Light" in Persian, is one of the most famous and oldest diamonds in the world. Weighing 105.6 carats, this gemstone is set on the crown of Queen Elizabeth, displayed at the Tower of London.

Discovered in India, this diamond has a tumultuous history, having been at the center of many battles and royal desires. Its value is priceless. Not only for its size and its purity, but also for its immense historical significance.

2.Le Cullinan I

• Name : Cullinan
• Price : Priceless (estimated at over 400 million dollars for all the stones)
• Type of gemstone : Colorless diamond
• Owner : British Crown

The Cullinan is the largest rough diamond ever discovered, weighing 3,106 carats before the cutting of the gemstone. It was divided by lapidaries into several pieces, the most famous of which are the Cullinan I (530.2 carats) and the Cullinan II (317.4 carats).They adorn the British crown jewels.

Discovered in South Africa in 1905, this diamond is a symbol of grandeur and power, embodying the excellence of jewelry craftsmanship.

3. The Hope Diamond

• Name : Hope Diamond
• Price : Priceless (experts estimate 250-350 million dollars)
• Type of gemstone : Blue diamond
• Owner: Smithsonian Institution

The Hope Diamond is a legend in itself. This deep blue 45.52-carat diamond is famous for its unique color and mysterious history, marked by tales of curses.Today, it rests at the Smithsonian Museum in Washington, attracting millions of visitors each year.

This jewel, discovered in India in the 17th century, has passed through the ages, changing hands from kings to merchants and collectors. Its exceptional blue hue is due to the presence of traces of boron, a rare chemical element, which gives it an almost supernatural aura.

See our blue sapphires

4.The De Beers Centenary

• Name : De Beers Centenary
• Price : Estimated at 100 million dollars
• Type of gemstone : Colorless diamond
• Owner : Anonymous private collector

The De Beers Centenary is a diamond of exceptional purity, weighing 273.85 carats. Discovered in South Africa in 1986, it was cut with extreme precision to maximize its brilliance.

Graded "D" by the GIA, the highest color grade for a diamond, it is consideredone of the most perfect diamonds ever created.Its rarity and brilliance make it a piece of inestimable value.

5. Pink Star: the rarest diamond in the world

• Name : Pink Star
• Price : 71.2 million dollars
• Type of gemstone : Pink diamond
• Owner : Chow Tai Fook Enterprises

This pink diamond of 59.60 carats is the largest pink diamond ever discovered. Its purity and exceptional size make it a unique piece. Sold at auction in 2017, it became one of the most expensive jewels ever acquired. This diamond, mined in Africa by De Beers in 1999, required more than two years of cutting and polishing to reveal its perfect brilliance.Its intense pink color, classified as "Fancy Vivid Pink," is extremely rare, making it a stone coveted by lovers of luxury and exclusivity.

See our pink tourmalines and pink sapphires

Why are these stones so precious?

The value of these gemstones is based on several criteria: their rarity, their cut, their purity and their history. These jewels embody the ultimate luxury, attracting collectors and lovers of timeless beauty.

At Bonnot Paris, we celebrate the elegance and exclusivity of precious stones.Explore our collection and let yourself be captivated by unique jewelry creations, designed to enhance every moment.

Custom engagement ring