I would like to know if one can buy anodized (black) chains, or
if it is possible to make one. I am looking for a black snake chain.
Will it wear OK? Any suggestions?
G’day. Anodizing is commonly only applicable to aluminium; the
surface of the metal is converted to a layer of aluminium oxide which
is porous and may be dyed any colour including black. If the
necklace was made of aluminium the colour would still only last a few
months. Just look at your frying pan lid
Silver can also only be surface treated - sulphiding or perhaps the
application of gun blue, but neither would last more than a few weeks
on a necklace. If anyone knows of a black metal alloy I would be
delighted to learn of it. Niello doesn’t count - it is too brittle
for anything but infill to engravings or other depressions in metal
Blackening gold isn’t possible - except in very low carat gold
containing much copper, or copper plated gold and even then it isn’t
the gold which is blackened; it is the copper which is blackened.
It is possible to blacken platinum - but the process is very
difficult (Other than copper plating it!) and again, it would only be
the surface that was treated. Sorry mate, you’ve had it! Cheers,
John Burgess; @John_Burgess2 of Mapua Nelson NZ