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Originally Posted by Jean
Hello Detlef,
You may test the presence of gold at a jeweller's shop or by using a gold test kit. I don't see clearly the presence of brass on these pictures as the kinatah looks shiny. May be low carat and thin gold coat? High gold content kinatah (22 kt) has a deeper colour. 
Regards |
Hello Jean,
have a look at the last picture, at the gonjo you can clearly see the brass at some places where the gold is gone. And I have cleaned the green copper compound which is clearly a sign for brass.
Regards,
Detlef