25 carat diamond ring expected to raise over £2 million in Hong Kong auction
The rectangular-cut, 25.27-carat, 'Jonker V' is one of a collection of 13 polished diamonds cut from the famous 726-carat Jonker rough, unearthed by Jacob Jonker at South Africa’s Elandsfontein mine in 1934.The Jonker was considered at the time to be the world’s fourth-largest gem-quality diamond and later displayed during the Silver Jubilee Celebrations of the Coronation of King George V and Queen Mary. It was first sold to Ernest Oppenheimer.
[Image: The Jonker V diamond by Harry Winston. Christie's]
[Image: emerald-and-diamond necklace. Christie's]