The JGI Group was created in 1990.
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1954
"JGI" on a ring likely stands for the Jewelry Group International, which is a company that specializes in manufacturing and selling jewelry. The initials may represent the company's logo or branding on the ring. It is common for jewelry pieces to have the manufacturer's mark or logo engraved on them for identification and authenticity purposes.
MVM Group was created in 1948.
Group Portrait was created in 1991.
BMB Group was created in 2004.
Ulstein Group was created in 1917.
Borders Group was created in 1971.
Marquardt Group was created in 1925.
Mecom Group was created in 2000.
Sopra Group was created in 1968.
Catlin Group was created in 1984.