How much does a black zirconium ring weigh in grams?

A plain black zirconium court band in UK size N weighs about 1.1g at 2mm wide, 2.1g at 4mm, 3.2g at 6mm and 4.2g at 8mm, with a standard 1.6mm wall. Width matters most: double the width and the weight doubles.

How much does a wide black zirconium wedding band weigh?

An 8mm black zirconium band weighs about 4.2g in size N and 4.8g in size T; a 10mm band about 5.3g and 6.0g. Wide bands in larger sizes are the heaviest rings in any metal.

How heavy is black zirconium?

Black zirconium weighs 6.5 grams per cubic centimetre, so a plain 4mm band in UK size N comes to about 2.1g and a 6mm band about 3.2g.

Is black zirconium heavy for a ring?

Black zirconium is heavier than titanium but lighter than 9ct gold, palladium, 18ct gold and platinum, at 6.5 g/cm³. Size for size, a black zirconium band is 1.4 times the weight of titanium and 41% of the weight of 18ct gold.

Does a black zirconium ring weigh more in a bigger size?

A little. A 6mm band weighs about 2.8g in size H, 3.2g in size N and 3.7g 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 black zirconium wedding ring?

These weights use a standard 1.6mm wall. A 6mm band in size N comes to about 2.3g with a lighter 1.2mm wall and 4.1g with a heavy 2mm wall, so two rings of the same width can feel quite different.

Can a black zirconium ring be resized?

Not in the usual way. The black is grown into the surface of the metal, so cutting or machining the band would show bright metal underneath. That is why the size is settled before the ring is made and every ring is made to that measurement.

Ring weight

How much does a black zirconium ring weigh?

A plain black zirconium wedding band in UK size N weighs about 2.1g at 4mm wide and 3.2g at 6mm. Black zirconium is heavier than titanium but lighter than 9ct gold, palladium, 18ct gold and platinum.

2mm band: 1.1g
4mm band: 2.1g
6mm band: 3.2g
8mm band: 4.2g

Size N, 1.6mm wall, court profile. Updated 17 October 2026.

Black zirconium 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.

Estimated grams, plain black zirconium court band, 1.6mm wall
Width	H	J	L	N	P	R	T	V	X
2mm	0.9	1.0	1.0	1.1	1.1	1.1	1.2	1.2	1.3
3mm	1.4	1.5	1.5	1.6	1.7	1.7	1.8	1.8	1.9
4mm	1.8	1.9	2.0	2.1	2.2	2.3	2.4	2.5	2.6
5mm	2.3	2.4	2.5	2.6	2.8	2.9	3.0	3.1	3.2
6mm	2.8	2.9	3.0	3.2	3.3	3.4	3.6	3.7	3.8
8mm	3.7	3.9	4.1	4.2	4.4	4.6	4.8	4.9	5.1
10mm	4.6	4.9	5.1	5.3	5.5	5.7	6.0	6.2	6.4

Columns are UK sizes. Each one links to that size's page, with its US, EU and millimetre equivalents.

Black zirconium against other metals

The same 6mm band in size N in every metal we make rings in, lightest first.

Estimated grams, 6mm court band, UK N, 1.6mm wall
Metal	Density	6mm band	Against black zirconium
Titanium	4.5 g/cm³	2.2g	69% of the weight
Black zirconium	6.5 g/cm³	3.2g	This page
9ct gold	11.4 g/cm³	5.6g	1.8 times the weight
Palladium	12 g/cm³	5.9g	1.8 times the weight
18ct gold	15.7 g/cm³	7.7g	2.4 times the weight
Platinum	20.1 g/cm³	9.8g	3.1 times the weight

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 black zirconium rings sold as 6mm can weigh quite differently if one has a heavier wall.

Estimated grams, black zirconium court band, UK N
Wall	4mm wide	6mm wide	8mm wide
1.2mm	1.6g	2.3g	3.1g
1.6mm	2.1g	3.2g	4.2g
2.0mm	2.7g	4.1g	5.4g

Black zirconium rings we make

Black zirconium: heat-grown black surface. It rates Mohs 8 for surface hardness and it is hypoallergenic.

28 of our rings are made in black zirconium, each to order in your size. Every one shows its own weight on its page.

Black rings About black zirconium Black zirconium or titanium?Ring weight calculator Width guide 6mm wedding rings

In black zirconium

Rings to look at

Rings in black zirconium, each with its own weight, price and widths on its page.

Classic

Plain black zirconium

Black all the way round. None of it is a coating.

From £199 4 to 10mm

Multi toned

Colour line on black

One narrow line of real colour through matte black.

From £285 4 to 10mm

Multi toned

Relieved black

Black cut back to bright metal along both edges.

From £255 4 to 10mm

Black zirconium ring weight questions

How much does a black zirconium ring weigh in grams?: A plain black zirconium court band in UK size N weighs about 1.1g at 2mm wide, 2.1g at 4mm, 3.2g at 6mm and 4.2g at 8mm, with a standard 1.6mm wall. Width matters most: double the width and the weight doubles.
How much does a wide black zirconium wedding band weigh?: An 8mm black zirconium band weighs about 4.2g in size N and 4.8g in size T; a 10mm band about 5.3g and 6.0g. Wide bands in larger sizes are the heaviest rings in any metal.
How heavy is black zirconium?: Black zirconium weighs 6.5 grams per cubic centimetre, so a plain 4mm band in UK size N comes to about 2.1g and a 6mm band about 3.2g.
Is black zirconium heavy for a ring?: Black zirconium is heavier than titanium but lighter than 9ct gold, palladium, 18ct gold and platinum, at 6.5 g/cm³. Size for size, a black zirconium band is 1.4 times the weight of titanium and 41% of the weight of 18ct gold.
Does a black zirconium ring weigh more in a bigger size?: A little. A 6mm band weighs about 2.8g in size H, 3.2g in size N and 3.7g 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 black zirconium wedding ring?: These weights use a standard 1.6mm wall. A 6mm band in size N comes to about 2.3g with a lighter 1.2mm wall and 4.1g with a heavy 2mm wall, so two rings of the same width can feel quite different.
Can a black zirconium ring be resized?: Not in the usual way. The black is grown into the surface of the metal, so cutting or machining the band would show bright metal underneath. That is why the size is settled before the ring is made and every ring is made to that measurement.