Crystalline surface
The crystal structure forms differently on every piece and cannot be reproduced. Each osmium element is a physical fingerprint with a blue-silver sparkle.
Osmium jewelry
The osmium ring: the rarest stable metal on your hand
An osmium ring carries a piece of crystalline osmium, the densest and rarest stable metal on Earth, set into a band by a goldsmith. Its surface sparkles blue-silver, cannot be reproduced and is registered under its own identification code. This page explains how such a ring is made, what determines an osmium ring price, what wedding rings with osmium look like and how you check that the osmium is genuine.
Space Ring with triangular osmium inlays1 / 5 
Space Ring from above2 / 5 
Round Bar Ring: a band fully covered in osmium3 / 5 
Round Bar Ring in its case4 / 5 
Round Bar Ring on the finger5 / 5
22.59 g/cm³density, the highest of all elements
€2,301per gram net, as of 11 September 2026
2017the year crystalline osmium began trading
OICidentification code, every osmium element unique
At a glance
What sets an osmium ring apart
Osmium is a platinum group metal with the symbol Os and atomic number 76. Since 2017 it has been available in a crystalline form, and that is the material a goldsmith sets into a ring.
OIC on the element
The osmium worked into the ring carries an Osmium Identification Code and is recorded in the Osmium World Database.
Stable to wear
Crystalline osmium is hard, corrosion-resistant and does not tarnish. In solid form it is chemically inert and non-allergenic.
Densest element
22.59 g/cm³: no element packs more mass into the same volume. Gold reaches 19.30 g/cm³, platinum 21.4 g/cm³.
How an osmium ring is made
Osmium is hard and demanding to work, so osmium jewelry is made in specialised goldsmith handwork. The decisive step is the setting: the osmium element is placed in the band without damaging its crystal surface, because that surface carries the OIC and has to remain readable.
The material itself is brought into circulation by the Osmium Institutes. Their online shop, the partner shop linked on this page, lists crystalline osmium in standard shapes for processors, for example diamonds, stars, triangles and hexagons. Finished rings are the work of goldsmiths; the shop has no ring category of its own.
Designs
Osmium ring designs: from a single dot to a full band
How much osmium a ring carries depends on the design. The table sorts the rings shown on this site by the way the osmium is set, from the smallest element to the largest surface.
| Design | How the osmium is set | Seen on |
|---|---|---|
| Set dot | One small round element, flush with the band | Wedding rings, ring with osmium setting |
| Inlay | A small square element let into a polished band | Slim band ring |
| Prong setting | A round osmium stone held by prongs, the look of a solitaire | Ring with blue osmium, solitaire ring |
| Geometric inlays | Three triangular pieces set into a faceted front | Geometric ring |
| Eternity setting | Round osmium discs in bezels all the way round the band | Eternity rings |
| Cabochon | One oval osmium element on the head of the ring | Moon ring, signet ring |
| Druzy face | A cushion-shaped area of crystalline osmium in a bezel | Druzy ring |
| Osmium face | A rectangular surface of crystalline osmium in a metal frame, here with a keyhole cut-out | Keyhole ring |
| Full band | The whole outer surface covered in crystalline osmium | Blue band ring |
The order is a visual comparison of the designs shown, not a weight table. Osmium weights per ring are not published on this site; they belong to the individual piece.
Osmium ring price
Osmium ring price: how it is calculated
There is no list price for an osmium ring. The price follows a simple logic: the weight of the osmium element multiplied by the current osmium price per gram, plus the setting and the goldsmith handwork.
| Component | What it depends on | Who sets the figure |
|---|---|---|
| Osmium element | Weight in grams multiplied by the osmium price per gram, currently €2,301 net (as of 11 September 2026) | Osmium Institutes; the daily price is published on osmium-preis.com |
| Setting | Metal of the band and the type of setting, from a flush dot to a full bezel | Goldsmith |
| Handwork | The work of setting the element without damaging its crystal surface | Goldsmith |
Osmium prices are quoted net per gram; for private buyers in Germany VAT is added. Osmium is not traded on classic exchanges. The first quotation in 2017 stood at €528 per gram and the price has risen since then; past development says nothing about future prices. The full history is on the osmium price page.
Osmium wedding rings
A wedding ring with osmium keeps the band classic and adds one accent. The pair shown here consists of two gold-coloured bands, each with a small round osmium dot set flush with the surface. Because no two crystal surfaces are alike, the two dots differ under the microscope even though the rings match.
Eternity rings take the idea further and carry round osmium discs in bezels all the way round. The solitaire ring holds one round element in four prongs, the familiar shape of an engagement ring. In every case the element keeps its OIC, so each ring of a pair can be verified on its own.
Whether a goldsmith can make a specific pair, and at what price, is a matter for the goldsmith. The online shop of the Osmium Institutes, our partner shop, lists the crystalline osmium itself, not finished wedding rings.
OIC: how you recognise a genuine osmium ring
Every genuine piece of crystalline osmium carries an Osmium Identification Code. Its microscopic crystal surface is scanned and the high-resolution image is stored under the OIC in the Osmium World Database. Because the crystal structure cannot be reproduced, the scan works like a fingerprint: the element in your ring can be checked against the record in the database.
This applies to jewelry as well. The osmium element in a ring carries its OIC, and authenticity and origin can be checked in the database. After a purchase the OIC is linked to the buyer as owner, so the record also serves as proof of ownership. How that check works step by step is described in the buying guide.
Wearing and caring for an osmium ring
Crystalline osmium is hard and corrosion-resistant; unlike silver it does not tarnish. In its solid crystalline form the metal is chemically inert, non-toxic and non-allergenic, which makes it safe to wear on the skin.
The toxicity often mentioned with osmium concerns osmium tetroxide, a compound that can form from fine osmium powder, not the solid crystalline element set into a ring. Treat the ring like any fine piece of jewelry and keep in mind that the crystal surface carries the OIC.
Osmium is the densest element at 22.59 g/cm³; one cubic centimetre weighs about 22.6 grams. In many of the designs shown here the osmium is a small element; how much a particular ring weighs depends on the individual piece. The density becomes tangible in a solid piece such as a disc.
Looking for crystalline osmium with an OIC? The online shop of the Osmium Institutes, our partner shop, lists certified pieces with their individual weight.
Certified osmium from the partner shop → AdFrequently asked
Osmium ring and osmium jewelry: frequently asked questions
What is an osmium ring?
A ring with an element of crystalline osmium set into the band by a goldsmith. Osmium is the densest element at 22.59 g/cm³ and the rarest stable metal on Earth; it has been traded in crystalline form since 2017. The element carries an OIC and is recorded in the Osmium World Database.
How much does an osmium ring cost?
There is no fixed osmium ring price. It is made up of the weight of the osmium element multiplied by the current osmium price per gram, currently €2,301 net (as of 11 September 2026), plus the setting and the goldsmith handwork. A small flush-set dot uses far less osmium than a band covered all round.
Are there osmium wedding rings?
Yes. The wedding rings shown on this page keep a classic band and add one small round osmium dot, set flush with the surface. Eternity rings carry several round osmium discs in bezels all the way round. Availability and price are a matter for the goldsmith; the partner shop lists crystalline osmium, not finished rings.
Does an osmium ring tarnish?
No. Crystalline osmium is hard and corrosion-resistant and, unlike silver, does not tarnish. Treat the ring like fine jewelry, because the crystal surface carries the OIC.
Is an osmium ring safe to wear?
Crystalline, solid osmium is stable and safe on the body: chemically inert, non-toxic and non-allergenic. Only osmium tetroxide, which can form from fine osmium powder, is toxic, and that is not what is set into a ring.
How do I know the osmium in a ring is genuine?
Every genuine osmium element carries an OIC. Its microscopic crystal surface is scanned and stored under this code in the Osmium World Database, where authenticity and origin can be checked. After purchase the OIC is linked to the buyer as owner. The buying guide explains the steps.
What other osmium jewelry is there besides rings?
Necklaces, pendants, earrings, letter charms and watches with an osmium element. Like the rings, they are made in goldsmith handwork and the osmium carries an OIC. An overview is on the osmium jewelry page.
Physical data according to standard reference values; the osmium price is the net price per gram and is updated automatically. The content of this page is informational and does not constitute investment advice.
Read on
Related topics
Osmium Jewelry
Rings, necklaces and objects made of crystalline osmium — rare, wearable pieces.
Discover jewelry →
Buy Osmium
Step by step to a safe purchase: OIC certificate, denominations and storage.
Open the buying guide →
Osmium Price
Current price per gram, the development since 2017 and what drives the price.
See the price →