LMHC Harmonizes on Color Stability, Cobalt Spinel, Tanzanite, Jade
The new or updated information sheets are meant to address critical issues impacting disclosure.
The Trade in FocusGem Focus – October 2025 – Featuring Sphene: a gem with more fire than a diamond
Its high dispersion and refractive index mean it has a lot of sparkle.
*Gem Focus & Market Pulse (Free Subscriber)September Hong Kong Show Exceeds Expectations Amid Uncertainties
Attendance and buyer sentiment improved over last year’s show.
The Trade in FocusThe U.S. Ended Duty-Free ‘De Minimis’ Import Exemption
GemGuide also dives into the potential tariff exemption for loose stones.
The Trade in FocusGIA Changes Lab-Grown Diamond Grading Service: What to Know
The change to descriptive terms for lab-grown diamonds becomes official Oct. 1.
The Trade in Focus5 Women Lapidary Artists Share Career Paths and Industry Insights
They talk about their lapidary styles, their most challenging rough, and the challenges and opportunities for the cutting and carving industry.
Featured ArticlesAbalone Pearls: Natural and Cultured, Blisters and Whole
Recent developments have led to the first cultured whole abalone pearls as producing countries look for more opportunities in abalone aquaculture.
Featured ArticlesProfile: Jewelry Historian Jack Ogden
He dives into writing about the history of the trade and the craft of jewelry-making, what he’s learned along the way, AI’s role in research, and more.
Featured ArticlesThe Diamond Tug-of-War
Two labs change their policies regarding lab-grown diamond grading, a new campaign supporting natural diamonds, and tariff rates have changed again.
Diamond MarketColor’s Tariff Paradox
The effect of the tariffs on gem market activity, and potentially the 2026 Tucson gem shows, remain to be seen and depend on a few other factors.
Colored Stone Market