Day: 23 September 2019

The 4 c’s of Diamonds – Part 5 of 5 – GIA laboratory graded diamonds

Why GIA certification is so important Knowledge, integrity, and excellence are the words included in the GIA lab’s crest. GIA (Gemological Institute of America) was founded by American jeweller Robert M. Shipley in 1931, and is credited for inventing the international diamond grading system in 1953; famously the 4Cs that stand for Colour, Clarity, Cut, […]