Trothe Free ring sizer

Comparison

18ct gold or Palladium 950?

Palladium 950 is meaningfully harder, so if your hands take a beating the choice is largely made for you.

18ct goldPalladium 950
Surface hardnessMohs 3Mohs 4.75
Density15.6 g/cm³12 g/cm³
ResizableYesYes
HallmarkedYesYes
HypoallergenicAlloy dependentYes
Price from£795£745

What the difference actually feels like

18ct gold is 1.3 times the weight of palladium 950 for the same ring. On paper that is a number; on the hand it is the difference between a ring you forget about and one you are aware of every time you move. Neither is better. It is worth knowing which you want before you spend anything.

Palladium 950 sits at Mohs 4.75 against 3. Ordinary household dust carries quartz at Mohs 7, which is the line that matters: below it a ring collects fine scratches from nothing more than daily life. The gap here is real but not dramatic.

The straight answer

Choose 18ct gold if depth of colour, or if weight on the finger.

Choose palladium 950 if a white metal at less than platinum, or if sensitive skin.

Still torn? The metal chooser asks six questions and picks one, and it will tell you if neither of these is right.

In both materials

Rings to look at

Common questions

Is 18ct gold or palladium 950 harder wearing?
Palladium 950, at Mohs 4.75 against 3. Airborne dust contains quartz at Mohs 7, so anything below that scratches from ordinary wear alone.
Which is heavier?
18ct gold, at 15.6 g/cm³ against 12. That is 1.3 times the weight, which is very obvious on the hand rather than a technicality.
Can both be resized?
Yes, both. Either can be sized up or down by a bench jeweller, and we do it free.
Which costs more?
18ct gold, starting at £795 against £745. That is about 7% more before any stone or inlay.
Are both hallmarked?
Yes, both, at the Birmingham Assay Office.