The single most common service-desk question we get: "My ring is scratched. Can you make it new?" Yes. Almost always. The better question is whether you should.
What patina actually is
On platinum, patina is a soft satin sheen that develops over years of contact - a result of millions of microscopic scratches reflecting light diffusely instead of in a mirror. Many platinum collectors prefer it to the high polish. It''s the metal telling you it''s been worn.
On gold (especially 18k yellow), patina shows up differently - warmer surface, slightly more matte, and on textured pieces the recesses develop a deeper richness. Some clients have us polish their pieces annually; others have never had us touch a piece they bought 20 years ago. Both are defensible.
When to polish, when to leave it
Polish when: a stone has come loose and the setting needs to be re-worked anyway; a piece is going to be photographed; a piece has visible deep gouges (not scratches) from impact. Leave it when: the wear is even, the prongs are tight, the stone is secure, and you like how the piece is aging.
The maintenance schedule we recommend
Prong inspection: every 12 months. Ultrasonic clean and inspection: every 18-24 months (free for clients on any piece we made or set). Full polish: only when warranted, never on a schedule. Replace tip-prongs as a preventive: every 8-10 years for everyday rings.