Honestly, I've spent years second-guessing which of my stones were real, and this guide finally makes the verification process straightforward. The practical steps are easy to follow even when you're just using a magnifying loupe and natural light. Worth every cent for the peace of mind it's given m
Elizabeth X.★★★★☆
I finally understand why some of my "citrine" pieces looked off — the heat-treated amethyst section explained it perfectly. Wish the photos were a bit larger since I read this mostly on my phone, but the breakdown of refractive index tests was genuinely useful for checking my collection.
Sofia X.★★★★☆
The section on spotting dyed agate versus natural banding was genuinely useful — I checked three stones in my collection and found one fake. I wish the photos were a bit larger, but for the price it's a solid reference I'll keep coming back to.