The price of a 24 carat diamond ring is exceptionally high, with recent market listings showing prices ranging from about $220,000 for a lab-grown diamond up to $860,000 or more for natural diamonds, and celebrity pieces valued in the millions[2][5][6].
For lab-grown 24 carat diamond rings, an example is the Leia 24 Carat F VS1 Emerald Cut Lab-Grown Diamond Engagement Ring in white gold, advertised at $231,609 (discounted price: $220,028.55). This price includes a GIA-certified, high-clarity center diamond set in 18kt white gold, approaching the top end for lab-grown stones of this size[2].
For natural diamonds, 20+ carat rings are sold in the $90,000 to $860,000 range depending on cut, clarity, color, and setting. For instance, a Platinum 23ct Pear Cut Diamond Engagement Ring is priced at $860,199, while rare fancy colored diamonds can far exceed these amounts[5]. The value for such large, high-quality stones is driven mainly by diamond rarity and prestige.
Celebrity and historical rings can be valued much higher. Paris Hilton’s 24-carat Harry Winston emerald cut diamond engagement ring reportedly cost $4.7 million in 2005, demonstrating how branding, provenance, and media attention can drive the price of exceptional stones well beyond market averages[6].
Diamonds above about 3-5 carats command exponential premiums due to rarity. For comparison, typical diamond engagement rings (1 carat) in 2025 range from $4,000–$9,000 for natural and $800–$2,000 for lab-grown stones, with high-grade rings sometimes reaching $17,000 or more for natural diamonds under 2 carats[1][3][7].
The setting price (gold or platinum) further affects the total cost, often adding $1,500–$5,000+ for luxury designs, and rising with gold prices[1]. Large diamonds almost always require bespoke settings, which adds to the expense.
References
- [1] Diamond Prices in 2025: A Complete Buyer’s Guide – Shiree Odiz
- [2] Leia 24 Carat F VS1 Emerald Cut Lab Grown Diamond Engagement Ring in White Gold – Nektan New York
- [3] The Average Engagement Ring Cost in 2025 – BriteCo
- [5] 20 Plus Carat Engagement Rings – Leon Diamond
- [6] 7 of the Most Expensive Engagement Rings Plus – Ken & Dana Design
- [7] How Much Do Diamonds Really Cost In 2025 – The James Allen Blog
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