Thanks to their special iridescence and unmatched beauty, pearls have been highly sought after throughout history. Due to their rarity and demand, ...

Today the main one is titanium dioxide — a naturally occurring compound that is extremely white and bright in its powdered ... pigments can be adjusted by selecting specific crystal structures ...

New research has shown that a pigment called Egyptian blue, formulated some 5,250 years ago, can be used as dusting powder to detect fingerprints on complicated surfaces. The earliest known ...