The Dresden Green Diamond

The Dresden Green Diamond is one of the rarest diamonds in the world, both in terms of its characteristics and of its provenance. Perhaps only the Hope Diamond can match its wonderfully documented history. It is a modified pear shape brilliant cut diamond weighing...

The Shah Jahan Diamond

The Shah Jahan diamond is a 56 carat table cut diamond, flat in general shape, perhaps (probably?) originally a cleavage piece that had been faceted. It is two inches long, but only one-eighth of an inch thick. It has two drill holes, to allow wire or cord to be...

The Compass of the Vikings

Iolite is a precious gemstone form of cordierite, named after the French geologist Pierre Louis Cordier in 1813. It is a blue to violet colour, similar to Sapphire or Tanzanite. With a hardness of 7 to 7.5, it is softer than sapphire, but harder than tanzanite. Its...

Condé Diamond

The Condé Pink Diamond (also known as Le Grand Condé) is a light pink pear-shaped stone of 9.01 carats, named after  Louis II de Bourbon, the Prince of Condé. He was Commander of the French Army, and is believed to have been presented the diamond as a token of...

The Beau Sancy Diamond

Although I find myself saying this a lot, the Beau Sancy must surely be one of the most beautiful diamonds in the world, a perfect combination of technical skill, artistic beauty, impeccable provenance and documented history. A modified pear shape double rose cut...