Koh-i-Noor Koh-i-Noor The Koh-i-Noor (; ), also spelt Kohinoor and Koh-i-Nur, is one of the largest cut diamonds in the world, weighing , and part of the British Crown Jewels. The diamond was originally owned by the Kakatiya dynasty. Probably mined in Golconda, India, there is no record of its original weight, but the earliest well-attested weight is 186 old carats (191 metric carats or 38.2 g). Koh-i-Noor is Persian for "Mountain of Light"; it has been known by this name since the 18th century. It changed hands between various factions in modern-day India, Pakistan, Iran, and Afghanistan, until being ceded
Crown Jewels of the United Kingdom Mary II was crowned as joint sovereign with her husband William III. After the Acts of Union 1707 joined England and Scotland together, the Scottish Crown Jewels were locked away in a chest, and the English Crown Jewels continued to be used by British monarchs. Gemstones were hired for coronations – the fee typically being 4% of their value – and replaced with paste and crystals for display in the Jewel House, a practice that continued until the early 20th century. During World War II, the Crown Jewels were stored in the basement of Windsor Castle. The most valuable gems,