Mineral curator Mike Rumsey discusses the science behind the Aurora Pyramid of Hope, an unrivalled collection of 296 coloured diamonds. On display in a lofty Museum gallery is a small, glittering ...

This 10.12 ct Fancy Vivid yellow pear shape illustrates the effect a fancy shape can have on intensifying the color in a yellow diamond. - Courtesy the Scarselli Family Color In diamonds, rarity ...

Fancy color diamonds are among the rarest and most valuable gemstones. Diamonds in the normal color range are colorless through light yellow and are described using the industry’s D-to-Z color-grading ...

The collection with a focus on natural-coloured diamonds blends traditional craftsmanship with contemporary sensibilities, offering a fresh perspective on how coloured diamonds can be incorporated ...

And that's just the beginning. Diamond fraud is a big issue. In April, a London gang was convicted of "running boiler rooms that sold dozens of coloured diamonds to investors at up to 30 times ...