Learn about diamonds, rubies, emeralds, and other gemstones. Explore their properties, formation, and grading standards. Get expert insights on identifying real vs. fake gems.

Will My Diamonds Glow Under Black Light?

Last winter, while helping a friend inspect an heirloom diamond ring under UV light, we both stared in disbelief as the stone suddenly lit up in a bluish glow. Was…

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The Secret Arsenal of a Gem Detective

Last winter, while visiting a jeweller in Vienna’s old town, I was invited to peer through a loupe at a sapphire the size of my thumbnail. What I thought was…

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