GSI BECOMES FIRST GEMOLOGICAL LABORATORY TO JOIN THE PLUMB CLUB – READ| AS SEEN IN JEWELLERY BUSINESS – DIAMONDS: WHAT’S YOUR TYPE (BY ALETHEA INNS) – READ|NATURAL SELECTION: AN ARTICLE BY RAPAPORT ON DIAMOND-VERIFICATION SERVICES FOR UNDISCLOSED LAB-GROWN AND TREATED STONES – READ | GEMOLOGICAL SCIENCE INTERNATIONAL ACHIEVES GLOBAL ACCREDITATION AS VERIFIER OF SUSTAINABILITY RATED DIAMONDS – READ
