Nizam Diamond

{{Use dmy dates|date=April 2017}}

{{Use Indian English|date=April 2017}}

{{Infobox diamond

| image =

| caption =

| name = Nizam Diamond

| carats = 340

| grams = 68

| color =

| cut = Almond

| mine = Kollur Mine,

Andhra

| country = {{flag|India}}

| cutter =

| found =

| original_owner = The Nizam of Hyderabad

| owner =

| value =

}}

The Nizam Diamond, also known as the "little Koh-i-Noor", was a famous diamond in the 1800s. Its whereabouts today are unknown. It was named after its original owner Mir Osman Ali Khan, the last Nizam of Hyderabad. The diamond is said to have been around {{convert|340|carat|g}} in size, and was mined from the now-submerged Kollur mine in the Krishna River valley in the year 1830.Deccan Heritage, H. K. Gupta, A. Parasher and D. Balasubramanian, Indian National Science Academy, 2000, p. 144, Orient Blackswan, {{ISBN|81-7371-285-9}}

Richard Francis Burton described it in an 1876 article:

The stone is said to be of the finest water. An outline of the model gives a maximum length of 1 inch 10'25 lines, and 1 inch 2 lines for the greatest breadth, with conformable thickness throughout. The face is slightly convex, and the cleavage plane produced by the fracture is nearly flat, with a curious slope or groove beginning at the apex. The general appearance is an imperfect oval, with only one projection which will require the saw: it will easily cut into a splendid brilliant, larger and more valuable than the present Koh-i-núr.{{Cite journal |last=Burton |first=Richard Francis |date=1876 |title=The Nizam Diamond: The Diamond in India |journal=Quarterly Journal of Science |volume=New Series Volume VI |pages=351–60}} [The Koh-i-noor diamond was cut down from 191 modern carats (38.2 g) to 105.6 carats (21.1 g) in 1852.]

The stone went missing shortly after the 1948 Annexation of Hyderabad.{{Cite news|last=|first=|date=20 June 2019|title=Nizam diamond|url=https://timesofindia.indiatimes.com/city/hyderabad/nizams-11-kg-gold-coin-diamond-still-untraced/articleshow/69865420.cms|archive-url=|archive-date=|access-date=|website=The Times of India}}