Ring weight
How much does a platinum ring weigh?
A plain platinum wedding band in UK size N weighs about 6.6g at 4mm wide and 9.8g at 6mm. Platinum is the heaviest metal we make rings in.
- 2mm band
- 3.3g
- 4mm band
- 6.6g
- 6mm band
- 9.8g
- 8mm band
- 13.1g
Size N, 1.6mm wall, court profile. Updated .
Platinum ring weight by width and size
Find your size across the top and your width down the side. Every figure is a plain court band with a 1.6mm wall, the shape most wedding rings are.
| Width | H | J | L | N | P | R | T | V | X |
|---|---|---|---|---|---|---|---|---|---|
| 2mm | 2.9 | 3.0 | 3.1 | 3.3 | 3.4 | 3.5 | 3.7 | 3.8 | 3.9 |
| 3mm | 4.3 | 4.5 | 4.7 | 4.9 | 5.1 | 5.3 | 5.5 | 5.7 | 5.9 |
| 4mm | 5.7 | 6.0 | 6.3 | 6.6 | 6.8 | 7.1 | 7.4 | 7.6 | 7.9 |
| 5mm | 7.1 | 7.5 | 7.9 | 8.2 | 8.5 | 8.9 | 9.2 | 9.5 | 9.9 |
| 6mm | 8.6 | 9.0 | 9.4 | 9.8 | 10.2 | 10.6 | 11.1 | 11.4 | 11.8 |
| 8mm | 11.4 | 12.0 | 12.6 | 13.1 | 13.6 | 14.2 | 14.7 | 15.3 | 15.8 |
| 10mm | 14.3 | 15.0 | 15.7 | 16.4 | 17.0 | 17.7 | 18.4 | 19.1 | 19.7 |
Columns are UK sizes. Each one links to that size's page, with its US, EU and millimetre equivalents.
Platinum against other metals
The same 6mm band in size N in every metal we make rings in, lightest first.
| Metal | Density | 6mm band | Against platinum |
|---|---|---|---|
| Titanium | 4.5 g/cm³ | 2.2g | 22% of the weight |
| Black zirconium | 6.5 g/cm³ | 3.2g | 32% of the weight |
| 9ct gold | 11.4 g/cm³ | 5.6g | 57% of the weight |
| Palladium | 12 g/cm³ | 5.9g | 60% of the weight |
| 18ct gold | 15.7 g/cm³ | 7.7g | 78% of the weight |
| Platinum | 20.1 g/cm³ | 9.8g | This page |
How the wall changes the weight
Width is how far the ring runs along your finger; the wall is how thick the metal is from inside to out. Two platinum rings sold as 6mm can weigh quite differently if one has a heavier wall.
| Wall | 4mm wide | 6mm wide | 8mm wide |
|---|---|---|---|
| 1.2mm | 4.8g | 7.2g | 9.6g |
| 1.6mm | 6.6g | 9.8g | 13.1g |
| 2.0mm | 8.4g | 12.5g | 16.7g |
Platinum rings we make
Platinum: the heavy white metal. It rates Mohs 4.5 for surface hardness and it is hypoallergenic and hallmarked in the UK.
In our range platinum 950 is set as a solid line into two titanium bands, made to order in your size. Plain platinum bands are listed without prices for now.
Platinum ringsAbout platinumWhat is 950 platinum?Ring weight calculatorWidth guide6mm wedding rings
In platinum
Rings to look at
Rings in platinum, each with its own weight, price and widths on its page.
Platinum ring weight questions
- How many grams of platinum are in a platinum ring?
- A platinum band is hallmarked 950, which means 950 parts in every thousand by weight are pure platinum. A 6mm band in size N weighs about 9.8g, so it holds about 9.3g of pure platinum; a 4mm band about 6.2g of the 6.6g.
- How much does a platinum ring weigh in grams?
- A plain platinum court band in UK size N weighs about 3.3g at 2mm wide, 6.6g at 4mm, 9.8g at 6mm and 13.1g at 8mm, with a standard 1.6mm wall. Width matters most: double the width and the weight doubles.
- How much does a wide platinum wedding band weigh?
- An 8mm platinum band weighs about 13.1g in size N and 14.7g in size T; a 10mm band about 16.4g and 18.4g. Wide bands in larger sizes are the heaviest rings in any metal.
- How heavy is platinum?
- Platinum weighs 20.1 grams per cubic centimetre, so a plain 4mm band in UK size N comes to about 6.6g and a 6mm band about 9.8g.
- Is platinum heavy for a ring?
- Platinum is the heaviest metal we make rings in, at 20.1 g/cm³. Size for size, a platinum band is 4.5 times the weight of titanium and 1.3 times the weight of 18ct gold.
- Does a platinum ring weigh more in a bigger size?
- A little. A 6mm band weighs about 8.6g in size H, 9.8g in size N and 11.4g in size V, because a larger ring is longer all the way round. Width changes the weight far more than size does.
- How thick is a platinum wedding ring?
- These weights use a standard 1.6mm wall. A 6mm band in size N comes to about 7.2g with a lighter 1.2mm wall and 12.5g with a heavy 2mm wall, so two rings of the same width can feel quite different.
- Can a platinum ring be resized?
- Yes. A plain platinum 950 band can be made larger or smaller by a jeweller, the way wedding rings have always been resized. The exception is a band set with stones all the way round, where there is nowhere to cut without disturbing a stone, so on those the size is settled when you order.