Ask Diamond Mike, Gallery of Diamonds

What is fluorescence? Is it good or bad?

Question What is fluorescence? Is it good or bad Answer Some diamonds fluoresce, which mean they emit light when exposed to long-wave ultraviolet light. Diamonds with strong fluorescence, called "overblues," can sometimes have a hazy appearance that makes them appear cloudy in light with strong ultraviolet content.  On the other hand, strongly fluorescent diamonds with… Continue reading What is fluorescence? Is it good or bad?

Ask Diamond Mike

The Idol’s Eye Diamond

The first authenticated fact of the Idol's Eye was its appearance at a Christie's sale in London on July 14th, 1865. It was knocked down to a mysterious buyer simply designated as "B.B." Later it is stated that the 34th Ottoman Sultan, Abdul Hamid II (1842-1918) owned the Idol's Eye. However the Idol's Eye would… Continue reading The Idol’s Eye Diamond