Erin Rosebaugh, a senior sales associate for Kizer-Cummings Jewelers, Lawrence, recently earned a Graduate Diamonds Diploma from the Gemological Institute of America, completing three courses: Diamond Essentials, Diamond Grading, and Diamond Grading Lab.

The coursework covered a variety of topics, including the institute’s clarity grading system, technology and its effects on diamond-cutting methods, and fundamentals of diamond treatments, synthetics and simulants.

Rosebaugh has worked at Kizer-Cummings for 10 years, and her responsibilities include management, buying and customer service.