The ROC Mark
A small mark with a big story.
Inside every ROC piece, stamped right beside the hallmark, sits a tiny infinity symbol framed in a bullion block. Clean, clear and reassuring.
Reading the inside of your ring
Five marks. One complete story.
UK hallmarks have protected buyers for centuries. The ROC mark sits alongside them — not replacing anything, simply adding the story of where your metal came from.
- 01
Sponsor's mark
The initials of the maker or company responsible for the piece.
- 02
Traditional mark
An optional symbol of the metal type, such as a crown for gold.
- 03
Fineness mark
The purity in parts per thousand. 750 is 18ct gold; 950 is platinum.
- 04
Assay office mark
The office that independently tested the metal, such as the Tudor rose of Sheffield.
- 05
ROC mark
The infinity in a bullion block: certified, consumer recycled precious metal.
The symbol
Infinity, held in bullion.
The bullion block stands for the precious metal itself — gold or platinum. The infinity loop within it stands for a life without end: metal that is treasured, returned, refined and treasured again, generation after generation.
Gold & platinum alike
Look for it only in the finest precious metals.
Whether your ring is yellow gold, white gold or platinum, the ROC mark appears in the same place. If you can't see it, ask your jeweller — they can confirm whether a piece is made with ROC metal.
