New Colombian Emerald Enhancement C.I. Gemtec Ltda. is the Colombian emerald laboratory that provides a new enhancement called Permasafe. Gemtec feels this enhancement offers more stability than the now-preferred Palma or cedarwood oil. It’s Gemtec’s way of offering the trade an Arthur Groom-like enhancement in Colombia. Most Colombian emeralds are enhanced with either cedarwood oil or palm oil. But a new enhancement called “Permasafe” is coming out of the emerald capital of Bogota, Colombia. Jaime Rotlewicz of C.I. Gemtec Ltda. in Bogota believes it’s the best thing going right now—at least in Colombia. “What we want to do is give the emerald a nice appearance for a longer time,” says Rotlewicz, who developed Permasafe with his partner, Rodrigo Giraldo, and local chemist Luis Bermudez. They believe Permasafe will reduce the inherent problems of the traditional enha

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