Editorial profile
Rolf Hartmann
Lab-grown diamond expert and former editor
Rolf brought decades of jewelry-industry experience to his reviews and buying guides for LabGrownCarats.
About Rolf Hartmann
I have decades of experience in the jewelry industry and know everything you need to know to find the perfect diamond. I specialize in lab-grown diamonds and have followed their exciting development from industrial usage to the incredible gemstone quality they are today.