Trothe Free ring sizer

Precious metal

Platinum 950

The heavy white metal

Surface hardnessMohs 4.5
Density21.4 g/cm³
ResizableYes
HallmarkedBirmingham

The densest thing we sell at 21.4 g per cubic centimetre, nearly five times titanium. Naturally white, so it never needs replating the way white gold does, and hypoallergenic. When people say a ring feels expensive, this is usually the weight they mean.

Right for

  • A white metal that stays white
  • Sensitive skin
  • Setting a stone securely

Wrong for

  • Anyone who dislikes weight
  • A tight budget

Honestly

Platinum does not lose metal when scratched, it moves it, so it develops a soft patina rather than wearing thin. Some people love that and some ask us to polish it back.

In this material

2 rings

Weighing it up

Compare it against something else

Platinum 950 questions

Can a platinum 950 ring be resized?
Yes. Platinum 950 is worked by any bench jeweller, and we resize free for as long as you own the ring.
Is platinum 950 hard wearing?
Its surface sits at Mohs 4.5. For comparison, airborne dust contains quartz at Mohs 7, which is why anything below that picks up fine scratches from ordinary wear. This is well below it, so expect marks. They polish out.
Is platinum 950 hallmarked?
Yes, at the Birmingham Assay Office. Gold over 1g and platinum over 0.5g must legally carry a UK hallmark, and ours do.
How heavy is a platinum 950 ring?
21.4 grams per cubic centimetre. Titanium is the lightest thing we make at 4.5 and platinum the heaviest at 21.4, so this sits at the heavy end of the range.
Is platinum 950 safe for sensitive skin?
Yes. It contains no nickel, which is the metal that causes almost all jewellery reactions.