Author name: Gregory

Assess a sapphire’s cut through its proportions, crown, pavilion, symmetry, windowing, extinction and actual return of light.

Learn what a sapphire window looks like, why it forms, how it affects colour and brilliance, and how to examine a stone before buying.

Understand heated and unheated sapphires, why heat treatment is used, how it can affect value and what a gemological report actually confirms.

Discover padparadscha sapphire’s pink-orange colour, rarity and report requirements, and why a pink sapphire is not automatically a padparadscha.

Find out why natural sapphire prices vary. Compare colour, treatment, origin, size, clarity, cut and laboratory reports before judging value.

Understand sapphire clarity, eye-clean appearance, inclusions, transparency and durability, without expecting every natural stone to be flawless.

Explore Sri Lankan sapphires, also known as Ceylon sapphires: their colours, reputation, treatments, origin reports and the checks to make before buying.

Learn to read a sapphire report: identification, carat weight, measurements, treatment, origin opinion, colour wording and report-number verification.

Discover why a sapphire can look milky or hazy, how fine inclusions scatter light, and when a soft velvety appearance differs from poor transparency.

Compare Royal Blue, Cornflower Blue and other blue sapphire colours. Learn to assess hue, saturation and tone beyond trade colour names.