TEYING BUYER GUIDE · UPDATED SEPTEMBER 30, 2026

Gold Plating Thickness Guide: Microns, Tiers, and What Survives Daily Wear

Plating thickness is written in microns, and that number decides how a piece looks after a year of wear. This explains the three tiers buyers meet in quotations, what TEYING’s four-layer system does, and how to write plating into a brief.

By Qiu Qiu, Founder and Design Lead at TEYING · September 30, 2026

The short answer: “gold plated” is a route, not a thickness

Two factories can both supply gold-plated brass earrings where one coating measures 0.3 micron and the other measures 2.0 microns. The pieces photograph identically and behave differently inside a season. Thickness is what separates them, and it is written in microns.

A micron is one thousandth of a millimeter, so the whole coating is thinner than a sheet of paper. The coating is what the customer sees, but the base metal underneath is what the piece is made of, and the coating lasts only as long as it resists contact, sweat, and chemicals.

The following is an illustrative procurement scenario, not a claim about a named customer or a published TEYING order.

A small brand launched a ring collection with a light gold coating, because the sample photos matched a heavier option and the unit price was better. Returns arrived within a season, mostly at the band interior where the plating had worn to a dull line. The pieces were not defective; the specification had never been matched to how a ring is worn.

The three tiers you will meet in quotations

Flash plating puts a gold tone on a piece with the least gold and the shortest plating time, which is why it appears on inexpensive goods and on samples that will not be worn. It reads as gold on day one and shows the base metal early.

Standard plating is the middle of the market and the most common request we quote for earrings and pendants. It holds through normal seasonal wear when the customer takes the piece off before swimming and cleaning.

Thick plating is specified for contact-heavy pieces. A ring band meets a palm, a desk, a door handle, and water many times a day, so the inside of the band is a wear surface rather than a hidden one.

The four-layer system, layer by layer

TEYING plates in four steps: a base seal, a copper layer, the gold color layer, and a protective top coat. The count matters, because thickness on the gold layer alone does not describe how a piece will wear.

• Base seal. Closes and levels the brass surface before any color goes on, so the layers above bond to a consistent surface.
• Copper layer. Copper is the electroplating base for gold on brass: it bonds well, fills fine surface texture, and levels the field for the gold color.
• Gold color layer. This is the layer buyers are really specifying, between 0.5 and 2.5 microns in our quotations. It sets the tone of the piece and how much abrasion it survives before the base metal shows.
• Protective top coat. A clear finish that slows tarnish and adds some resistance to sweat and handling. It wears first, so it buys time rather than permanence.

When a quotation states a thickness, ask which layer it describes. In TEYING quotations, the micron figure refers to the gold color layer.

Vermeil: a different base material, not a thicker coating

Vermeil is often described as “better gold plating,” which hides the real difference. The base is 925 sterling silver, and the gold layer is at least 2.5 microns of 18K gold. TEYING’s vermeil follows that construction: 925 silver underneath, 2.5 micron 18K gold on top.

The silver base changes what happens when the gold thins at a contact point. The metal that shows through is still a precious metal, so the piece ages toward silver rather than a yellow base-metal tone. That is the difference a customer notices after a year, and the honest reason vermeil can carry a higher retail price.

Markets that regulate the word vermeil set conditions on gold fineness and minimum thickness, so confirm the rule for the countries you sell into and keep the plating record that supports the claim.

Nickel release and EN 1811

EN 1811 is the test method used in the EU to measure nickel release from items in prolonged contact with skin, and it is the requirement most buyers meet first, whether or not they sell in Europe. The part that catches people out is timing: nickel can sit in the base alloy or in an intermediate plating layer, so the requirement has to shape the material decision before plating rather than be tested for afterwards.

TEYING confirms testing and documentation per material, destination market, and order scope. If your market sets lead, nickel, or cadmium requirements, put them in the brief, and a test report is meaningful only when the tested material and finish match the pieces you actually sell.

Writing plating into a brief

A plating brief a factory can quote from has five parts, and the wear expectation is the one that should drive the rest.

• Base material per SKU: brass or 925 sterling silver.
• Gold color: 18K yellow, a 14K tone, rose, or a Pantone reference, with a physical sample approved where color is critical.
• Target thickness for the gold layer, given as a range rather than a single number.
• Surface finish: polished, brushed, satin, antique, or two-tone, with the contrast areas marked.
• Wear expectation: an occasional earring, or a ring the customer rarely takes off.

Thicker plating costs more, because it consumes more gold and more plating time, so the tier should follow the product rather than a habit of asking for the maximum everywhere.

What plating cannot do

Plating is a coating over a base metal, never solid gold, and no coating outlasts unlimited abrasion and chemistry.

• A 2.5 micron ring worn daily will still thin at the band interior. It thins more slowly than a 0.5 micron piece, not never.
• The protective top coat wears before the gold layer, leaving the color exposed to sweat and cosmetics.
• Thickness varies with geometry. Flat outer surfaces take coating more evenly than recesses, holes, prong tips, and the inside of a curve.

Care guidance does not replace a specification, but it sets expectations, which is why a care card belongs in the box. Four lines cover most of it: put jewelry on after perfume and lotion; take it off before dishes, cleaning, swimming, and the gym; wipe it with a soft dry cloth; store pieces separately in a pouch or box.

If you are developing a plated collection, send the reference image and the wear expectation through the TEYING quote form. A daily-wear ring and an occasional pendant need different answers, and the design lead can propose the base material, plating tier, and finish for the price point.

FAQ

What does 2.5 microns mean on gold-plated jewelry?

It is the thickness of the gold color layer: 2.5 thousandths of a millimeter. It is a relatively heavy decorative coating, chosen for pieces that meet skin and hard surfaces often, and it means something only alongside the base material and the full layer system.

Is vermeil better than gold plating?

They are different constructions rather than two grades of one product. Vermeil is 925 sterling silver with at least a 2.5 micron gold layer, so wear reveals silver. Gold-plated brass with a thick coating can serve as long, but it reveals a base metal tone when the coating thins.

How long does gold plating last?

There is no single number, because service life depends on thickness, layer system, base material, how often the piece is worn, and how it is cared for. A thick coating on an occasional earring behaves very differently from a standard coating on a ring worn daily.

Can plated jewelry pass nickel release requirements?

Yes, when the base alloy and the plating route are chosen for it and the requirement is raised before production. EN 1811 is the method most often referenced for skin-contact items, and testing is confirmed per material, destination market, and order scope.