For Costume Jewellery

Copper-tin-(zinc) electrolytes as nickel-free alternatives


MIRALLOY® has been offering alternative nickel-free plating for fashion jewellery since 1981. With MIRALLOY®, electrolytes are used to deposit copper-tin or copper-tin(-zinc) coatings in rack and barrel plating. Depending on the electrolyte used, white or yellow layers can be deposited.

MIRALLOY® coatings stand out due to their excellent distribution of metal and, depending on the bath type, high tarnish resistance,
levelling, abrasion resistance and exceptional corrosion resistance. A further plating layer with gold, rhodium, palladium or other precious metals, as well as tarnish protection if required, can be added with the right pre-treatment to create optimal corrosion protection.

Your advantages:

  • Copper-tin-(zinc) alloy coatings of white or yellow colour
  • Diamagnetic
  • Nickel-free (§27 of REACH, Ann. XVII, Reg. (EC) No 1907/2006, Standard 100 by OEKO-Tex®)
  • Resistant to tarnishing and corrosion
  • Excellent layer thickness distribution
  • Can be lacquered
  • Can be combined with precious metals
  • Tried and tested process does not cause allergic reactions in the way that nickel does
Ring coated with MIRALLOY<sup>®</sup> and AURUNA<sup>®</sup>.

Ring coated with MIRALLOY® and AURUNA®.


  • Costume jewellery
  • Ear studs / earrings
  • Necklaces
  • Bangles
  • Wrist watches