Gem Certification & Assurance Lab, Inc.
Retail Luxury Goods and JewelryNew York, United States2-10 Employees
GCAL, Gem Certification & Assurance Lab, Inc., is an independent diamond and gemstone certification laboratory based in New York City, located in the World Diamond Tower. It operates within the Retail Luxury Goods and Jewelry sector and provides verification services for diamonds and gemstones, including weighing, measuring, examining, testing, analyzing and photographing each item. The organization promotes a strict zero-tolerance approach to consumer 4C grading, and each certificate includes Gemprint-based security registration along with light-performance analysis under the Diamond Profile program. GCAL holds ISO 17025 accreditation in North America. The company has a small staff, with between 2 and 10 employees, and maintains a website at diamondid.com.