What does the cryptic crossword clue "Fabulous gem India sent abroad (8)" mean?

The definition is "Fabulous". The wordplay uses an anagram. anagram of GEM + INDIA = IMAGINED; definition: "Fabulous" The answer is Imagined.

Fabulous gem India sent abroad (8)

Telegraph Prize Cryptic #3015 | 17 Down | 2019-08-04 flower