Understanding7 min read
Sapphire and Ruby: The Two Faces of Corundum
Sapphire and ruby are one mineral wearing two colours. Here is how a trace of chromium turns corundum red, and where the line between pink sapphire and ruby actually sits.
Specialty Stones10 min read
Spinel vs Sapphire: The Misidentified Royal Gem
Spinel is a separate mineral from sapphire, but for centuries the two were confused in royal jewelry. Here is how to tell them apart, why spinel commands a fraction of sapphire's price, and why Sri Lankan red spinel is one of the most undervalued natural gemstones today.
First Look at New Ceylon Sapphires
New stones and guides, straight from the source. Written rarely, and only when there is something worth saying.