Will a US jeweler accept IGI?

Yes for identifying and setting the stone. If a specific jeweler prefers GIA paperwork, ask them before you buy, and still judge the diamond in front of you.

US guides

IGI versus GIA for a US lab-grown diamond purchase

GIA is the name many Americans learned first. IGI grades a large share of lab-grown loose diamonds.

The US decision

Paying more only because the PDF header changed, while cut and clarity stayed the same, is optional. Paying less for a report you cannot open is not a bargain.

What to verify

Match the report number either way before US delivery.

What to do next

Shop the stone, then accept the lab that certified it. Carat Mate ships the certified loose diamond and its lab report to United States addresses. Prices on the site are in USD. Wrong-item returns may be considered within 3 days of delivery, subject to review.

Questions

Will a US jeweler accept IGI?: Yes for identifying and setting the stone. If a specific jeweler prefers GIA paperwork, ask them before you buy, and still judge the diamond in front of you.