Decorative Finishes
for Jewelry and Apparel Hardware

Decorative metal hardware on handbag plated with Uyemura Miralloy (copper, tin, zinc) process

Miralloy® – An electroplating alloy combination of tin, copper and zinc, is an excellent silver alternative that is tarnish-free. It is also an excellent substitute for nickel for zippers, buttons and clasps. Approximately 20% of the world’s population has a skin reaction to nickel metal. The longer this metal is in contact with skin, the more likely it is to cause a burn.

Miralloy is a high-quality, cost-effective silver alternative finish that is inert and long-lasting. It’s available in white or yellow versions (the latter is an under-plate for gold) and is used worldwide for zippers, buttons, clasps and decorative metal on all types of apparel.

The white version is often referred to as “white bronze.” It doesn’t tarnish and withstands normal clothes washing and drying.

Miralloy silver alternative is also available in a lead-free white version, and this is the variation most often used in North America.

Nickstar Black Nickel – a decorative black nickel technology that deposits a thin, and highly uniform over-coat of black nickel-zinc alloy, preserving the substrate's brightness while producing an exceptionally rich black nickel finish.

Rhoduna Alloy 1 – the world's first galvanic rhodium alloy, formulated from rhodium and ruthenium. It provides whiteness and performance characteristics equal to the highest-quality rhodium coatings, with even greater smoothness and durability.

Rhoduna Diamond Bright – deposits ultra-bright white coatings with unmatched brightness and brilliance. Allows for direct deposits on silver, gold, copper, copper alloys, nickel and nickel alloys.

Jewelry finished with Uyemura anti-tarnish sealant for preserving brightness

Ruthuna 479 Black – strongly acidic ruthenium electrolyte is considered by many to be among the most attractive finishes. This process produces a deep, dark plated surface that closely resembles fine onyx. It seems to reflect and absorb light simultaneously. On large jewelry pieces, it is the perfect offset for gold. It is also an elegant finish for upscale eyewear.

Auruna® gold plating process are also available for various requirements, whether related to color, hardness, or purity.

Sealing 691antitarnish preserves metal brightness indefinitely, while allowing substantial reductions in precious metal use. As a result, it’s also ideal for decorative applications on jewelry, leather goods and hardware.

Platinode®platinized titanium anodes are used for precious metal plating and non-ferrous base metal plating. To counteract the aggressive nature of gold or rhodium plating, these anodes are plated in a unique molten platinum method – thus avoiding the cracks or pores and extending anode life.

Auruna, Platinode, TD, J-1, J-2, and Miralloy are trademarked products of Umicore-GT.

Uyemura jewelry finishes include Miralloy nickel alternative, white bronze, lead-free white bronze, black ruthenium, gold plating, white rhodium, and highly reflective plating processes for fine gemstones.

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For more details, or to arrange test processing,
contact your Uyemura representative.