In honor of September’s official birthstone, we aim our spotlight on the “Blue Giant of the Orient,” a gem that’s not only the largest...

Understandably, colour is the single most important factor when evaluating coloured gems. Generally, the more attractive a gem’s color,...

Corundum is the mineral species that includes both sapphire and ruby as varieties. Red corundum is known as ruby and all other coloured corundum (including colourless, or white sapphire as it is known in the trade) is sapphire. Sapphire is generally known as a blue gemstone but surprisingly it comes in a wide range of colours and quality variations. In general, the more intense and uniform the colour is, the more valuable the stone. Sapphires that are not blue are known as fa