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In this quiz, we guess: Amethyst, Aquamarine, Bismuth, Blue Agate, Diamond, Hessonite, Jasper, Larimar, Lazurite, Nephrite, Peridot \ Chrysolite, Pink Quartz, Ruby, Rutile, Sapphire, Snow Obsidian, Spinel, Topaz, Zircon, Перлина.