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If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .
If a ruby is heated it ......... temporarily lose its colour .