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tline3open  Restoring blackened oxidation?

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Author Topic:   Restoring blackened oxidation?
Paul Colarik

Posts: 16
Registered: Feb 2004

iconnumber posted 02-18-2004 10:26 PM     Click Here to See the Profile for Paul Colarik     Edit/Delete Message   Reply w/Quote
I recently purchased two beautiful antique sterling serving pieces; however, it appears that the previous owner dipped them and removed all the beautiful blackened oxidation that brings out the details. Is there a "quick fix" that can be done to duplicate the effects of time?

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Scott Martin
Forum Master

Posts: 11520
Registered: Apr 93

iconnumber posted 02-19-2004 08:08 AM     Click Here to See the Profile for Scott Martin     Edit/Delete Message   Reply w/Quote
It takes experience to get a lasting effect but you might want to try using Liver of Sulfur.

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Bob and Carol Carnighan

Posts: 63
Registered: Apr 99

iconnumber posted 02-19-2004 06:35 PM     Click Here to See the Profile for Bob and Carol Carnighan     Edit/Delete Message   Reply w/Quote
There is a quick and easy solution. Jewelry supply stores sell a bottled solution for darkening silver. Dip the piece for seconds to minutes, no more. Rinse. The entire piece will be darkened. Now polish or lightly buff the superficial areas leaving the deeper areas darkened. We have often used this on pieces that were dipped in anti-tarnish solution.

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Paul Lemieux

Posts: 1792
Registered: Apr 2000

iconnumber posted 02-19-2004 09:02 PM     Click Here to See the Profile for Paul Lemieux     Edit/Delete Message   Reply w/Quote
Bob and Carol--do you have a product name for that dip? I have been trying to find such a product for some pieces in my collection that were dipped in anti-tarnish solutions. There are no jewelry supply stores in my area but I might be able to purchase it online somewhere if I know the brand/product name.

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Bob and Carol Carnighan

Posts: 63
Registered: Apr 99

iconnumber posted 02-20-2004 01:10 PM     Click Here to See the Profile for Bob and Carol Carnighan     Edit/Delete Message   Reply w/Quote
We dip in "silver/black" made by "Grobet USA"
Label states "for a smooth black patina on silver, gold, copper and bronze." We bought one 4 oz bottle and have used it repeatedly.

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Scott Martin
Forum Master

Posts: 11520
Registered: Apr 93

iconnumber posted 02-20-2004 03:23 PM     Click Here to See the Profile for Scott Martin     Edit/Delete Message   Reply w/Quote
I have not used them but there is also:

  • "Black Max" from Rio Grand
  • "SILVER BLACK" Liquid Oxidizer from Griffith
  • "PRO-CRAFT" SILVER OXIDIZER

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FredZ

Posts: 1070
Registered: Jun 99

iconnumber posted 02-20-2004 05:51 PM     Click Here to See the Profile for FredZ     Edit/Delete Message   Reply w/Quote
I recommend brushing on the blackening solution rather than dipping it. You have more control and you can localize the areas you wish to have darkened. It is also safer to use on hollow handles if it is brushed on. Dipping hollow handles runs the risk of introducing this liquid into the handle.

The color tends to be very black and not as subtle as that gotten with Liver of Sulfur (Sulfurated Potash).

Depending on the condition of the decoration, I sometimes will use a FFF or FFFF grade of pumice to remove the color from the high spots and then polish with a silver polish. The pumice is usually available or can be ordered by your local paint distributor. Slaked plaster can also be used as a mild abrasive.

Fred

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