Current Estimated Value and Market Position
The Koh-i-Noor diamond is not actively traded on any public market, so its exact price is not listed on exchanges or auction records. Most independent gemologists and major auction houses estimate the stone's insured replacement value is in the range of 100 million to 350 million USD, depending on the assumed per-carat price for a colorless Golconda-type diamond of its size and historical pedigree. Because the stone is part of the British Crown Jewels and is held by the UK government, there is no verified sale price, no recent transaction data, and no independent appraisal from a recognized gem laboratory. The value is therefore based on comparable auction results for rare historic colorless diamonds and expert estimates rather than a confirmed market quote Koh-i-Noor diamond worth Forbes.
In terms of global diamond rankings, the Koh-i-Noor is not the largest or most expensive stone ever sold, but it consistently appears among the most famous diamonds because of its documented provenance and size of approximately 105.6 carats after recutting. Its per-carat implied value is high because it is a large, historically significant, colorless stone with a complex ownership history that includes Mughal emperors, Persian rulers, Sikh leaders, and the British Crown. The stone's value is driven more by historical scarcity and cultural symbolism than by recent price benchmarks, which makes direct comparisons to modern gem-quality diamonds difficult Sotheby's Koh-i-Noor overview.
Ownership History and Legal Status
The Koh-i-Noor was mined in the Golconda region of India and passed through the courts of the Mughal Empire, the Persian Empire, the Sikh Empire, and the British East India Company before being formally surrendered to the British Crown in 1849 under the Treaty of Lahore. After the annexation of the Sikh Empire, the stone was presented to Queen Victoria and later set into the Crown Jewels of the United Kingdom, where it remains today under the custodianship of the Tower of London Tower of London Crown Jewels.
Several governments and advocacy groups have repeatedly claimed ownership or requested the return of the Koh-i-Noor, including India, Pakistan, Iran, and Afghanistan, but the UK government maintains that the stone was ceded legally under the terms of the Treaty of Lahore and remains the property of the British Crown. No international court has ruled on the dispute, and no binding legal agreement has transferred ownership, so the stone's legal status remains a matter of diplomatic and historical debate rather than a settled property claim BBC Koh-i-Noor ownership dispute.
Factors That Influence the Koh-i-Noor Diamond Worth
Size, Cut, and Color
The Koh-i-Noor weighs 105.6 carats after its final recutting in 1852, when it was reshaped from a Mughal-era rose cut to a modern oval brilliant to improve its brilliance. It is classified as a colorless Type IIa diamond, which is a rare category that includes many of the most valuable gemstones in history. These physical characteristics place it among the top tier of large historic diamonds, even though its current crown setting prioritizes ceremonial display rather than maximizing light performance GIA diamond grading overview.