pigeon's blood

Color types such as "pigeon's blood," "cobalt blue" and "Santa Maria" are wildly popular, but also wildly inconsistent.

The author makes his first pilgrimage to Burma's Mogok Stone Tract.

A brief description of the color types for ruby and sapphire used at Lotus Gemology.

A loving look at ruby – the gem of passion – from the standpoint of the connoisseur.