GIA vs IGI: which is better?

Both have their strengths. GIA diamonds have 10,371,946 listings at an average of £3,768 GBP/ct. The best choice depends on your priorities for cut quality, budget, and personal preference.

What is the price difference between GIA and IGI diamonds?

Price differences between GIA and IGI diamonds vary by quality grade and carat weight.

GIA vs IGI

Detailed comparison of GIA and IGI diamonds: pricing, availability, and market data.

The market currently has 3,593,857 GIA-certified diamonds and 5,927,040 IGI-certified diamonds tracked across all retailers. IGI certification has grown significantly, particularly in the lab-grown segment where it is the dominant grading lab.

GIA vs IGI at a glance

GIAIGI

Avg price per ct

$4.8K/ct

$1.4K/ct

Active listings

10.4M

18.8M

GIA

labGIA

diamond count3,593,857

Total Listings10,371,946

Avg. Price per Carat£3,768/ct

IGI

labIGI

diamond count5,927,040

Total Listings18,831,049

Avg. Price per Carat£1,133/ct

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