The heart of africa diamond
Books similar to Blood Diamonds: Tracing the Deadly Path of the Worlds Most Precious Stones
A Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. At room temperature and pressure , another solid form of carbon known as graphite is the chemically stable form, but diamond almost never converts to it. Diamond has the highest hardness and thermal conductivity of any natural material, properties that are utilized in major industrial applications such as cutting and polishing tools. They are also the reason that diamond anvil cells can subject materials to pressures found deep in the Earth. Diamonds have been known in India for at least 3, years but most likely 6, years. Diamonds have been treasured as gemstones since their use as religious icons in ancient India. Their usage in engraving tools also dates to early human history.
The Cullinan Diamond was the largest gem-quality rough diamond ever found,  weighing 3, It was named after Thomas Cullinan , the mine's chairman. In April , it was put on sale in London, but despite considerable interest, it was still unsold after two years. The stone is mounted in the head of the Sovereign's Sceptre with Cross. Both are part of the Crown Jewels. Seven other major diamonds, weighing a total of
The Cullinan diamond discovered accidentally in the Premier diamond mines of Transvaal, South Africa, on January 26th, , had an enormous weight of 3, carats, making it the largest ever gem-quality rough diamond to be discovered in the world. The diamond was named after Sir Thomas Cullinan, the discoverer and owner of the Premier diamond mines, where mining activity began just three years before the record-breaking discovery. The cutters of the Cullinan diamond, I. The Characteristics of the 9 large diamonds are summarized in the table below. When the cutting of the Cullinan diamond was completed in , the Cullinan I, also known as the Greater Star of Africa, with a weight of The Cullinan I held this rare distinction for a period of about 80 years, until the discovery of the carat Golden Jubilee rough diamond in , which was subsequently transformed into the See table below, and rank order of famous diamonds greater than carats in weight, under the sub-title Cullinan I towards the end of this web page.
The Cullinan Diamond Last updated: August 07, The Cullinan. Get an offer.
Weighing 1. His discovery was presented that same afternoon to Sir Thomas Cullinan, who owned the mine. Worried that the diamond might be stolen in transit from Africa to London, Edward arranged to send a phony diamond aboard a steamer ship loaded with detectives as a diversionary tactic. While the decoy slowly made its way from Africa on the ship, the Cullinan was sent to England in a plain box. Asscher, who had cut the famous Excelsior Diamond, a carat diamond found in , studied the stone for six months before attempting the cut. On his first attempt, the steel blade broke, with no effect on the diamond. On the second attempt, the diamond shattered exactly as planned; Asscher then fainted from nervous exhaustion.
The Cullinan, the largest gem quality diamond ever found , was discovered at the Premier Mine on 26th January The rough diamond was nearly flawless and named the Cullinan in honour of Sir Thomas Cullinan , the founder of the Premier Mine, who was visiting that very day. Louis Botha, premier of the Transvaal, persuaded his government to buy the diamond for approx. The diamond was divided into 9 major gemstones, 96 smaller stones and about King Edward bought one of the major gems for his consort, Queen Alexandra.
The Archduke Joseph Diamond is a It last sold in for This sum was the most ever paid to date for a colorless diamond. It has sometimes been worn in a necklace by celebrities such as Celine Dion, who wore it on television in At In , the diamond was placed in a ring created specifically for it.