Below you can find the This october birthstone often has a white background but displays a rainbow of colors in bright light Jeopardy Words Answer. The answer to This october birthstone often has a white background but displays a rainbow of colors in bright light has 4 letters. This clue belongs to the Gems & jewelry category and is part of Jeopardy Word Level 566. If you scroll near the bottom you will find other clues and answers part of level 566