Rhodium Melt Value Calculator
Current rhodium price: $4,650.00/troy oz (Reference price)
Rhodium Melt Value Calculator
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Common Rhodium Items
| Item | Weight | Melt Value |
|---|---|---|
| 1 oz Rhodium Bar (99.9%) | 1 ozt | $4,645.35 |
| 5 gram Rhodium Bar | 0.1607 ozt | $746.51 |
| Rhodium-Plated Jewelry (typical ~0.5–1 micron) | 0.0001 ozt | $0.47 |
| Catalytic Converter (avg rhodium content) | 0.05 ozt | $232.50 |
Rhodium by Weight
| Quantity | Troy oz | Value |
|---|---|---|
| 1 gram | 0.03215 ozt | $149.50 |
| 5 grams | 0.1607 ozt | $747.26 |
| 1 troy oz | 1 ozt | $4,650.00 |
| 10 troy oz | 10 ozt | $46,500.00 |
About Rhodium — The Rarest Precious Metal
Rhodium is the rarest and most valuable of all precious metals. Annual global production is only about 30 tonnes — roughly 1/6th of platinum production. It is a platinum group metal (PGM) primarily mined as a byproduct of platinum and nickel mining in South Africa, which produces over 80% of the world's supply.
The dominant use for rhodium is in catalytic converters for gasoline vehicles, where it specifically reduces nitrogen oxides (NOx) into nitrogen and oxygen. Unlike palladium and platinum, there is no viable substitute for rhodium in this application, which contributes to its extreme price volatility.
Rhodium is also widely used as a plating material in fine jewelry. "Rhodium-plated" white gold and sterling silver receive a thin layer (typically 0.5–1.0 microns) that provides a brilliant, reflective finish and prevents tarnishing. However, the amount of rhodium used in plating is extremely small — usually less than 0.01 troy ounces per item.
Due to its rarity and thin market, rhodium prices can be extremely volatile. The price has ranged from under $1,000/oz to over $29,000/oz in recent years. Investors should be aware that rhodium is illiquid compared to gold, silver, or platinum.
Melt Value = Weight (troy oz) × Purity × Spot Price
Key Facts About Rhodium
- Chemical symbol Rh, atomic number 45 — a platinum group metal discovered in 1803 by William Hyde Wollaston
- Annual global rhodium production is only ~30 tonnes, making it roughly 1/100th as abundant as gold
- Rhodium prices hit an all-time high of ~$29,800/oz in March 2021 before declining sharply
- South Africa produces over 80% of the world's rhodium, primarily from the Bushveld Igneous Complex
- Rhodium is the most reflective metal — it reflects up to 80% of visible light
- There are no rhodium mines — it is only extracted as a byproduct of platinum and nickel mining
Frequently Asked Questions About Rhodium
Why is rhodium so expensive?
Rhodium is extremely rare — only about 30 tonnes are mined per year worldwide, making it roughly 100 times scarcer than gold. Its price is driven by strong demand from the automotive catalytic converter industry combined with very limited and concentrated supply, primarily from South Africa.
Can I buy physical rhodium as an investment?
Yes, you can purchase physical rhodium in the form of bars and coins from specialized precious metals dealers. However, the market is far less liquid than gold or silver, spreads between buy and sell prices are wide, and storage options are limited. Most investors access rhodium through ETFs or allocated accounts.
What is rhodium plating on jewelry?
Rhodium plating is a process where a very thin layer of rhodium (typically 0.5–1.0 microns) is electroplated onto jewelry, most commonly white gold and sterling silver. It provides a bright, reflective finish, prevents tarnishing, and adds scratch resistance. The plating wears off over time and usually needs reapplication every 1–3 years.
How much rhodium is in a catalytic converter?
A typical gasoline catalytic converter contains about 1–2 grams (0.03–0.06 troy ounces) of rhodium, though the exact amount varies by vehicle make and model. Rhodium is used alongside platinum and palladium to reduce harmful nitrogen oxide emissions into harmless nitrogen and oxygen.
Why are rhodium prices so volatile?
Rhodium's extreme price volatility stems from its tiny market — annual production is only about 30 tonnes, there are no primary rhodium mines, and over 80% of supply comes from one country. Even small shifts in automotive demand or South African mining output can cause dramatic price swings.
Is rhodium rarer than gold?
Yes, rhodium is far rarer than gold. Annual rhodium production is roughly 30 tonnes compared to about 3,000 tonnes for gold, making it approximately 100 times scarcer in terms of new supply. Rhodium also has no dedicated mines and is only recovered as a byproduct of platinum and nickel mining.
Where does rhodium come from?
Over 80% of the world's rhodium comes from South Africa, primarily from the Bushveld Igneous Complex. Smaller amounts are produced in Russia, Zimbabwe, and Canada. Rhodium is never found in dedicated mines — it is always extracted as a byproduct of platinum and nickel mining operations.
What is rhodium used for besides catalytic converters?
Beyond catalytic converters (which account for about 80% of demand), rhodium is used in jewelry plating for a brilliant reflective finish, as a catalyst in the chemical industry for producing nitric acid and acetic acid, and in glass manufacturing for making fiberglass and flat-panel displays.
How do I sell rhodium?
You can sell physical rhodium through specialized precious metals dealers, refiners, or online platforms that deal in platinum group metals. Be aware that buy-sell spreads for rhodium are significantly wider than for gold or silver due to the illiquid market. Getting multiple quotes is recommended to ensure a fair price.
Will hydrogen fuel cells affect rhodium demand?
Hydrogen fuel cells primarily use platinum, not rhodium, so a shift toward fuel cell vehicles would not directly boost rhodium demand. However, if hydrogen vehicles replace gasoline cars that use catalytic converters, rhodium demand from the auto sector could decline. The transition timeline remains uncertain and will depend on policy and infrastructure developments.