Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleBrazilian Watermelon Tourmaline with Iris Effect.AuthorsBehnke, RussAbstractThe article focuses on Brazilian watermelon tourmaline slices with an iris effect, showcasing their rainbow spectrum due to internal fractures and resembling the captivating allure of fiery Australian opals.SubjectsTOURMALINE; DIAMOND crystals; GEMS &; precious stonesPublicationGems & Gemology, 2024, Vol 60, Issue 1, p81ISSN0016-626XPublication typeArticle