Rhodium
Rhodium gives a bright white finish and good tarnish resistance, which is why it is common on white-metal silver. It is the most expensive of the three finishes and wears first at high-contact points such as ring shanks and clasps.
Thickness and surface preparation decide how long the colour holds; both should be specified in the quotation rather than assumed.
Gold plating
Gold plating is chosen for colour: yellow, rose or champagne. The colour comes from the plating bath and the thickness determines wear life, so the target has to be stated per finish.
Gold-plated silver should be described accurately in product copy, plated over 925 silver, so retail customers know what they are buying.
Oxidised finishes
Oxidised, or blackened, silver uses a controlled patina in recesses to create contrast. It is a surface treatment rather than a coating, and it wears on raised areas by design.
Care instructions matter more for this finish: polishing cloths can strip the patina, so recommend gentle cleaning only.
Choosing a finish by market
Pick the finish by price point, wear pattern and after-sales tolerance. High-turnover fashion styles often suit a thinner plating refreshed each season; long-wear pieces justify a thicker layer.
Whatever the choice, record the finish specification, plating thickness target and care instruction in the product record so repeat orders match.