Explore the fascinating world of gemstone phenomena with a Singaporean gemologist. Discover the unique properties, optical effects, and...

Iridescence is a fascinating optical effect that occurs in certain gemstones, causing them to display a play of colors that seem to...

Singapore's leading gemologist, Howe Wei, shares insights on Play of Color Gemstones Phenomenon

See stars in your gems? Discover asterism, a dazzling phenomenon in sapphires & other gemstones!