WHY GCAL?

Top 5 reasons to believe (there are many more, but we respect your time)

GCAL is the only diamond grading laboratory …

1. that provides a “Zero Tolerance” 4C’s Consumer Grading Guarantee
2. that includes Gemprint® Security Registration with every certificate
3. that includes Diamond Profile® light performance analysis
4. that is ISO 17025 accredited in North America
5. that weighs, measures, examines, tests, analyzes and photographs every diamond several times