Truly unique · Anodised zirconium
Infinity, anodised
From £365
Looping infinity lines in colour around a bright band.
Two lines loop and cross around the whole band in a continuous infinity, cut into natural zirconium and anodised so the loops are colour and everything else is bright metal. The colour is grown out of the metal, not painted on it.
Made to order · 2 to 3 weeks · posted insured
Before you order, in one place
- What you are buying
- Infinity, anodised, anodised zirconium, made to order in your size. Widths 4 to 10mm.
- Price
- £365 total. UK delivery and engraving are included and nothing is added at checkout.
- When it arrives
- 2 to 3 weeks to make, then one working day insured and signed for. Delivery in full
- Changing your mind
- 30 days from delivery, return postage paid, unless you have it engraved. The cancellation right
- Who you are contracting with
- Trothe Ltd, registered in England and Wales, company number 17431230, Lytchett House, 13 Freeland Park, Wareham Road, Poole, Dorset, BH16 6FA. Questions and complaints to hello@trothe.co.uk.
- MaterialAnodised zirconium
- Surface hardnessMohs 8.5
- Density6.5 g/cm³
- ResizableSpecialist assessment
- HallmarkedNot applicable, non precious
- MadeTo order, in your size
- Delivery2 to 3 weeks, insured
- Returns30 days, unengraved
- EngravingOptional, included, inside the band
Also in: Wedding rings, Promise rings, His and hers, Men's rings
About this ring
Infinity, anodised, in detail
Two lines loop and cross around the whole circumference in one continuous figure, an infinity drawn without a break. The loops are cut into natural zirconium and anodised, so they carry the colour while the rest of the satin band stays bright. At each crossing the coloured lines meet and part again, and between crossings the bright metal opens into small lens shapes. Softer and rounder than the Greek key, more intricate than the single wave, it is a pattern with its meaning built into the drawing.
How it wears
The coloured loops sit in their cuts below the bright surface, which carries everyday contact, and the metal around them is hard and hypoallergenic. Anodised colour is a finish on the surface, so steady abrasion against grit or rough materials can thin it over time; ordinary daily wear is a far gentler thing. When the colour looks flat, residue on the surface is one cause and it cleans off. Buffing would take oxide with the dirt, so the loops are cleaned rather than polished.
Choosing yours
Wider bands let the loops open into long, easy curves, so 8 to 10mm suits anyone who wants the infinity to be read rather than discovered. At 4 to 6mm the crossings draw close and the ring becomes a delicate coloured lace. The colour can carry part of the meaning: dark blue and purply blue are deep and calm, bronze warm, pink and yellow bright. It pairs with itself, and a couple in two different colourways keeps the shared figure while letting each ring belong to its wearer.
Width by width
| Width | How it reads | Weight, est. | Price |
|---|---|---|---|
| 4mm | Slim, the quietest everyday width | 2.1g | £365 |
| 5mm | Between slim and classic | 2.6g | £365 |
| 6mm | Classic, the usual starting point for a band | 3.2g | £365 |
| 7mm | Classic to broad, more of the pattern shows | 3.7g | £365 |
| 8mm | Broad, a ring that is clearly there | 4.2g | £390 |
| 9mm | Wide and bold, best on a larger hand | 4.7g | £390 |
| 10mm | Wide and bold, best on a larger hand | 5.3g | £390 |
Weights are estimates for a plain band of the same width in anodised zirconium at UK size N with a 1.6mm wall, from the model in our ring weight calculator. A pattern cut into the surface removes a little metal, so the finished ring is slightly lighter. The price steps up at the widths that take more metal to make.
How it compares with the rings nearest it
| Ring | What sets it apart | Metal | Widths | Surface hardness | From |
|---|---|---|---|---|---|
| Infinity, anodised (this ring) | Looping infinity lines in colour around a bright band. | Anodised zirconium | 4 to 10mm | Mohs 8.5 | £365 |
| Celtic, anodised | Celtic knotwork, cut into the band and then coloured. | Anodised zirconium | 4 to 10mm | Mohs 8.5 | £365 |
| Greek key, anodised | The Greek key meander, cut around the band and anodised. | Anodised zirconium | 4 to 10mm | Mohs 8.5 | £365 |
| Wave, anodised | A single wave in colour, cut into a satin band. | Anodised zirconium | 4 to 10mm | Mohs 8.5 | £365 |
There are 13 anodised zirconium bands in the range, from £269 to £365. All about anodised zirconium.
The metal, in brief
Zirconium grows its own oxide layer under electrical current, and the thickness of that layer decides the colour. Nothing is painted, plated or dyed. The colour is the surface of the metal itself, produced by light interfering with a film a few hundred nanometres thick, which is why it shifts slightly as you turn your hand.
Surface hardness Mohs 8.5, density 6.5 g/cm³, and hypoallergenic, so it is a sound choice for skin that reacts to nickel. It is not a precious metal, so it carries no hallmark.
Compared side by side: Anodised zirconium or black zirconium, Anodised zirconium or titanium, Anodised zirconium or sterling silver. Or read the full anodised zirconium guide.
Work it out before you order
About Infinity, anodised
- Can this ring be resized?
- Anodised zirconium needs an assessment of both the band and its coloured surface. Advice about plain titanium or black zirconium does not establish what can be done to this particular finish. Before ordering, confirm the options if the fit changes: whether an alteration is possible, whether colour and engraving can be retained, or whether a separate remake would be needed. No alteration or remake is promised without a quote for the exact ring.
- Is engraving included?
- Yes, and it is optional. Leave the box blank and the ring is made plain. If you do want one it is laser cut inside the band where the ring is made, rather than sent out to a third party, and there is no charge and no extra wait.
- How long will it take?
- 2 to 3 weeks. It is made in your size after you order, not picked off a shelf, and that is the reason the widths and finishes are open choices.
- Can I return it if I have it engraved?
- Not for a change of mind. An engraving makes the ring clearly personalised, which puts it outside the statutory right to cancel, and it cannot be resold. Every ring shop draws the line here. Order it plain and you keep the full 30 days. Either way, a ring that arrives faulty or is not what you ordered is covered by the Consumer Rights Act, which nothing waives.
- How much does the Infinity, anodised ring weigh?
- About 2.1g at 4mm, 3.2g at 6mm, 5.3g at 10mm, estimated for a plain band in anodised zirconium at UK size N. Larger sizes and wider bands weigh more. It is a light ring by any standard: 18ct gold of the same size is more than twice the weight.
- What widths does it come in, and do they cost the same?
- 4 to 10mm. 4mm, 5mm, 6mm, 7mm are £365, and 8mm, 9mm, 10mm £390, because the wider bands take more metal to make.
- What is closest to the Infinity, anodised in the range?
- Celtic, anodised (anodised zirconium) and Greek key, anodised (anodised zirconium). The comparison table on this page sets them side by side on metal, width, hardness and price.
- What if I get the size wrong?
- If it is unengraved, return it inside 30 days and we refund it, and we pay the postage. Use the free ring size finder first if you are unsure, and if the ring is a surprise, ask us and we will talk you through the ways to find out without asking them.