Professional Gem Sciences Laboratory (PGSL) is a highly experienced gemological service provider based in Chicago, IL. With a wealth of knowledge spanning decades and a vast collection of graded stones, PGSL offers a range of services including diamond certificates, origin reports, damage reports, and appraisals for insurance replacement.
Back by popular demand, PGSL is also offering diamond and gemstone grading and identification courses in 2023, marking their first classes since the Covid-19 pandemic. With a commitment to integrity as strong as a diamond, PGSL is dedicated to meeting all your gemological needs.
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