Lisa Rosen

On October 19, 2025, a brazen daylight raid at Paris’s Louvre Museum stunned the world: in well under 10 minutes,...

Discover the 4 main gem cutting styles that transform rough stones into dazzling jewels. Learn how brilliant, step, mixed &...

Master gemstone anatomy and faceting terminology! Discover how precision cutting creates brilliance, fire, and scintillation - the only human-controlled aspect...

Discover the ancient art of faceting - how rough stones become brilliant gems through 3,000 years of cutting techniques. Learn...

Discover the Orlov diamond's journey from Indian temple to Russian Imperial Sceptre. Learn how this 190-carat gem connects to Catherine...

Discover how synthetic amethyst is created, its key differences from natural specimens, and expert methods of identification in this comprehensive...

Understand quartz toxicity: safe for jewelry wearers but potentially dangerous for makers. Learn about silica dust health risks, essential safety...

Discover how amethyst forms in volcanic regions worldwide. Learn what makes Brazilian, Uruguayan, and other sources unique, and the geological...

Donald Trump's global tariffs could substantially impact the global gem trade if they are allowed to come into effect.

We reveal new custom details and photos of Rosalia's 4 carat round diamond engagement ring.

There are a lot of considerations when buying jewelry insurance. Here's how to find the best policy provider.

What is the November Birthstone? The most common birthstone for November is yellow topaz however citrine, another lovely yellow gemstone,...

What is the August Birthstone? Periodot and spinel are the modern birthstones for August. Those born in this month are...

May 9, 2022 Lab-grown diamonds are finally hitting mainstream consumers, and Alexander Weindling, Co-Founder and CEO of Great Heights, which...

Geopolitics may finally be catching up to the luxury jewelry market. In a recent interview with Bloomberg, Cartier CEO Cyrille...

By Walter Yeates with Lisa Rosen contributing March 10, 2022 On February 24, 2022, Russian President Vladimir Putin ordered an...

Sotheby’s sold the 55-sided, 555.55-ct Enigma diamond for $4.3 million. It’s the largest natural black diamond and largest cut diamond...

You can make future heirlooms with colored gems. A soldier returns from Afghanistan and tells his wife the gemstone stories...

Think of jewelry stones as reflections of you or the recipient. Learning about colored gems can help you find the...

Publisher's note: This short history was originally published by the late Stephen Kotlowski, in the public domain, and is reproduced...

Review of the 2015 Tucson Gem and Mineral Show by International Gem Society member Richard Edley.