When I first became a gemologist in the late 1970’s I appreciated…
Pricing-Enhanced Diamonds
Just got a call that has me riled up – again. It…
Gem treatments confuse consumers and jewelers alike
It seems like there’s another gem treatment around every corner these days.…
Tucson Review
Each year, I take a small number of my gem students to…
Internet bargain or scam?
Yes. The problem is you don’t know which until you check them…
Fracture-filled: fact, fiction, future
It has been seven years since Zvi Yehuda was credited with the…
Diamond enhancement stirs controversy
The latest technological breakthrough in gem enhancement – the “Yehuda” treatment for…