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ruby glass

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Definition of ruby glass in English:

noun

[mass noun]
Glass coloured red by the inclusion of specific impurities such as gold or metal oxides.
Example sentences
  • The art of incorporating this liquid gold into ruby glass is attributed to German glassmaker Johann Kunckel in the late seventeenth century.
  • Even before that, the island was shrouded in legend after alchemist Johannes Kunkel tried to make gold there in the 17th century, producing ruby glass instead.
  • Others were ambrotypes, a related antique method in which the original plate is backed with ruby glass or some other dark material that reverses the negative image.

Definition of ruby glass in:

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