"Aquamarine (Navel Gem)"@en . . "\"Aquamarine\" is a Gem who first appeared in \"It Was A Dark And Stormy Night\", along with her other four Aquamarines. She will make a second appearance in \"Steamboat City: Underwater!\""@en . . . . . . "\"Aquamarine\" is a Gem who first appeared in \"It Was A Dark And Stormy Night\", along with her other four Aquamarines. She will make a second appearance in \"Steamboat City: Underwater!\""@en .