Established in 2007, SGL is a British diamond certification and authentication laboratory that is headquartered in London. SGL is one of the fastest growing international laboratory, spanning 5 countries, 23 locations, and 207 geo-footprints countries worldwide. SGL has been at the forefront of Natural Diamonds as well as Lab Grown Diamonds classification and identification and contributed passionately towards creating awareness on the subject.
SGL is an international diamond certification and grading laboratory serving the gems & Jewellery industry with integrity and commitment. An SGL report is the result of the latest science, state-of-the-art equipment with the highest possible quality standard and analytical infrastructure.
At the forefront of gemological accuracy and precision, the International Gemological Institute (IGI) has received ISO 17025 accreditation for both natural and laboratory-grown diamond grading. This certification highlights the reliability of IGI’s diamond grading scale and adherence to a strict diamond quality chart. With 50 years of expertise, IGI’s methods ensure precise diamond quality assessment, protecting the industry and consumers alike.
