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Acid Finish

A customer has asked that I apply an “acid” finish to some
pieces I’m making for her. She saw this finish at the Las Vegas
show and showed me a piece that was somewhat similar. The effect
was like a subtle but slightly glittery sandblast finish, and
extremely even regarding texture and color. Quite nice. Any ideas
how this type of proprietary finish is attained?


Jeffrey Everett

Jeffrey: I tried etching on silver awhile ago with nitric and
didn’t agitate it often enough. What I got was (in the etched
areas) a cool texture that looked like hammering with a tiny
hammer, very even. you might try an experiment putting into acid
with no agitation and see what effect it has on gold. Dave
Crystalguy Art Jewelry, Magical Art Jewelry for the Enlightened Mind

Hey Jeffery,

I have used acid to get an interesting and uniform finish on
gold by first masking off the areas I didnt want exposed with
varnish. Then I immersed the piece in aqua regia (four parts
hydrochloric - one part nitric) for a few minutes. When the depth
was attained, I then electropolished the piece using the dyna-pro
system at 2 volts. This gave a very uniform color with a grainy
texture and it was bright… I’m not sure this is what you are
wanting, but you might try it on a scrap piece of gold.