Andie Weinman is the President and CEO of Preferred Jewelers International and the Continental Buying Group Inc. Andie is known throughout the Jewelry Industry as a trusted source for everything you’ll ever need to know ….
Gemological Science International is one of the leading gemological organizations in the world provides grading for loose and studded diamond and gemstone jewelry education and conducts gemological research. The only major independent gemological entity that has been established in the 21st century, Gemological Science International provides a perfect combination of state of the art technology, industry proficiency, expertise, and ethical integrity in their services. The leading members of the management team of the GSI family hold over half a century of industry experience and knowledge. The demeanor and passion of the employees to grow and educate has contributed to the success of Gemological Science International in providing reliable and expert services globally.
Gemological Science International is dedicated to educating retailers and customers worldwide through various educational programs and courses.
Gemological Science International, with the help of its expert staff and advanced instruments deliver the highest quality standard and assurance grading reports, known as certificates. Consumers can access their GSI grading reports (certificates) from anywhere across the globe by logging in to GSI website. All GSI grading reports (certificates) are issued by following standard procedures across all branches globally.
Gemological Science International offers a variety of grading and identification reports (certificates) in various sizes and formats. The reports (certificates) are accompanied by educational materials.
