Gemstone Journal

Buying a heart-shaped sapphire: weight, dimensions and setting fit
Compare heart-shaped sapphires using their outline, weight, measurements and evidence, then discuss setting suitability with your jeweller. Read more...
Unheated sapphires: understanding treatment claims and laboratory reports
Learn how to distinguish seller-reported sapphire treatment claims from supplied laboratory evidence, and what to check before choosing a loose stone. Read more...