Multiple choice

Which one is not a color type of glass

  1. Ruby

  2. Emerald

  3. Amber

  4. Flint
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ruby, emerald, and amber are well-known types of colored glass created by adding specific metal oxides. Flint glass is an optical glass historically named for the flint pebbles used in its raw materials, noted for its high refractive index rather than being a specific color category.

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