Lisa Rosen
Articles by Lisa Rosen
Overview of Gem Cutting Styles
Discover the 4 main gem cutting styles that transform rough stones into dazzling jewels. Learn how brilliant, step, mixed &...
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The Role of Faceting in Gemology
Master gemstone anatomy and faceting terminology! Discover how precision cutting creates brilliance, fire, and scintillation - the only human-controlled aspect...
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What Is Faceting?
Discover the ancient art of faceting - how rough stones become brilliant gems through 3,000 years of cutting techniques. Learn...
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The Orlov Diamond: A Tale of Power and Intrigue
Discover the Orlov diamond's journey from Indian temple to Russian Imperial Sceptre. Learn how this 190-carat gem connects to Catherine...
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Synthetic Amethyst: What is it and How is it Made?
Discover how synthetic amethyst is created, its key differences from natural specimens, and expert methods of identification in this comprehensive...
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Quartz Toxicity: Understanding the Risks for Jewelers and Wearers
Understand quartz toxicity: safe for jewelry wearers but potentially dangerous for makers. Learn about silica dust health risks, essential safety...
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Amethyst Sources Around the World: The Geological Story Behind These Purple Gemstones
Discover how amethyst forms in volcanic regions worldwide. Learn what makes Brazilian, Uruguayan, and other sources unique, and the geological...
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Trump Tariffs Threaten To Disrupt the Global Gemstone Market
Donald Trump's global tariffs could substantially impact the global gem trade if they are allowed to come into effect.
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Exclusive: Rauw Alejandro and Rosalía’s engagement ring details revealed
We reveal new custom details and photos of Rosalia's 4 carat round diamond engagement ring.
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What Customers Value Most in the Jewelry Insurance Buying Experience
There are a lot of considerations when buying jewelry insurance. Here's how to find the best policy provider.
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November Birthstones: Citrine and Yellow Topaz
What is the November Birthstone?
The most common birthstone for November is yellow topaz however citrine, another lovely yellow gemstone,...
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August Birthstones: Peridot and Spinel
What is the August Birthstone?
Periodot and spinel are the modern birthstones for August. Those born in this month are...
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Exclusive Industry Interview: Clean Origin CEO Alexander Weindling Predicts Explosive Growth For Lab-Grown Diamonds
May 9, 2022
Lab-grown diamonds are finally hitting mainstream consumers, and Alexander Weindling, Co-Founder and CEO of Great Heights, which...
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Cartier Signals Price Increase And Other Luxury Jewelers May Follow
Geopolitics may finally be catching up to the luxury jewelry market. In a recent interview with Bloomberg, Cartier CEO Cyrille...
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Russian Invasion of Ukraine Will Not Disrupt Supply of Diamonds, Gold in the Short Term
By Walter Yeates with Lisa Rosen contributing
March 10, 2022
On February 24, 2022, Russian President Vladimir Putin ordered an...
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Sotheby’s Sells 555.55-ct Enigma Diamond for $4.3m
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...
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Star Sapphires and the Daddy Moon: Gemstone Stories
You can make future heirlooms with colored gems. A soldier returns from Afghanistan and tells his wife the gemstone stories...
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What is Your Gemstone Personality?
Think of jewelry stones as reflections of you or the recipient. Learning about colored gems can help you find the...
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A Short History of Diaspore and its trade names Zultanite and Csarite
Publisher's note: This short history was originally published by the late Stephen Kotlowski, in the public domain, and is reproduced...
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2015 Tucson Gem and Mineral Show – IGS Member Report
Review of the 2015 Tucson Gem and Mineral Show by International Gem Society member Richard Edley.
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