What is rhodium?
Rhodium is a silvery, metallic, hard metal with the element symbol Rh. This metal is scattered in various ores and is very expensive due to its low quantity. Like silver and gold, rhodium is a precious metal.
What color is rhodium?
Adriana Orsini Rhodium-Plated Pavé Band $95, SHOP NOW.
Rhodium is a vibrant silvery-white and highly reflective metal. Moreover, it is possible to create rhodium colors that range from light grey to black by binding special inks to rhodium.
It is extremely shiny, reflecting up to 80 percent of light; it gives one of the best sheens attainable. This physical property makes it a popular metal finish for jewelry, mirrors, and searchlights.
Black rhodium is a blend of rhodium and other metals and chemicals to create a dark color. Both rhodium and black rhodium are used to plate other metals like gold and sterling silver.
What is rhodium used for?
Rhodium has a high melting point, is resistant to oxidation and corrosion, and thus is one of the most stable metals.
Because of these superior chemical properties, rhodium can be used for plating jewelry, especially white gold jewelry. Jewels are usually plated with a layer of silver followed by a layer of rhodium, as rhodium is inert and can prevent oxidation and resist wear.
In addition, rhodium is used as an anti-wear coating and catalyst for high-tech instruments. For example, it is often plated on headlight mirrors, telephone repeaters, pen tips, catalytic converters for internal combustion vehicles.
What is rhodium plated?
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Since rhodium is corrosion resistant and has a good luster, it is mainly used in the electroplating industry, where this metal is plated on the surface of other metals, like silver, gold.
Rhodium-plating is any jewelry made from a core of metal and coated with a thin layer of rhodium to give it extra smoothness, luster, and strength. It is often used on silver-hued metals like white gold, silver, or palladium.
Because rhodium is a hard material, the rhodium plating does not easily scratch, corrode, dent, or tarnish. Rhodium plated jewelry have a solid color, is not easy to wear, and has a reflective surface.
The thickness of most rhodium plating ranges between 0.5 to 1.0 microns. Other names for rhodium plating are rhodium dip or rhodium flashing.
What is rhodium plated sterling silver?
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Rhodium-plated sterling silver refers to sterling silver coated in a thin layer of rhodium to make a jewelry. Rhodium enhances the innate value and durability of sterling silver.
Should I rhodium plate my jewelry? And why?
There are several reasons for rhodium-plating jewelry.
Firstly, rhodium plating is used to conceal imperfections and provide more sheen to silver and other metal jewelry.
Also, rhodium is harder than silver and gold and therefore makes an excellent protective coat from scratch. It thus enhances the durability of your jewelry pieces.
Another benefit of rhodium is that it does not tarnish and does not require special cleaning procedures.
Morever, rhodium plating is used to make your jewelry hypoallergenic. If you are allergic to nickel or silver, rhodium plating creates a barrier that prevents the allergen from coming to contact with your skin.
Rhodium plating costs
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Because rhodium is very rare and expensive, plating is also expensive. The cost for rhodium plating can vary from $60 to $120 for a fine engagement ring.
The quality of the rhodium solution, turnaround time, the finished effect, and the jeweler’s skill contribute to the pricing variation. Wider and heavier jewelry pieces soak up more rhodium and consequently cost more than smaller ones.
A common issue with rhodium flashing is that it is an ongoing cost, and this cost can add up significantly over time.
Is rhodium jewelry safe to wear?
Rhodium-dipped jewelry is safe to adorn for a good reason. Rhodium does not readily oxidize, corrode, or react with the skin.
Some people are allergic to jewelry materials like silver, nickel, and gold. Rhodium is devoid of nickel and is naturally hypoallergenic, making it a perfect option if you have nickel allergies. Rhodium plating protects the skin against contacting the jewelry’s base material.
However, the rhodium coat can wear off with time and expose the part of the jewelry that contains the allergens. You can solve this by re-plate the jewelry with rhodium.
Advantage of rhodium plated jewelry
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The primary benefit of rhodium dipping is longevity. It enhances the resistance to scrapes and scratches on rhodium-plated jewelry.
Another advantage is that rhodium is hypoallergenic. You will not experience allergic reactions to rhodium, which also covers the allergen material that makes the core of your jewelry.
Rhodium plating will also prolong the visual appeal of your jewelry. The plated coat makes your jewelry have a brighter sheen, slows tarnishing, and lessens the appearance of blemishes.
De Beers Black black rhodium engagement ring in 18kt gold and diamond $900, SHOP NOW
This playful and timelessly romantic Azulea band from De Beers Jewellers is crafted intricately from black rhodium plated 18kt gold and features a single round cut sparkling white diamond set in a hammered band.
The total approximate diamond weight is 0.03ct with H SI+ classified diamond quality colour grade and clarity. The thickness of the ring measures 0.2cm in width.
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Forget classic round-shaped bands. Today’s ring boasts a new design. Case in point: this sparkling black rhodium ring with half pavé black diamonds from EF Collection.
Adriana Orsini Daytime Rhodium-Plated Blue Topaz & Cubic Zirconia Large Chain Ring $175, SHOP NOW.
This rhodium ring is from the Daytime Collection. It is a statement-making cushion-cut blue topaz ring crafted from sculpted chain, covered in shimmering pavé.
Although relatively unknown as a precious metal, rhodium is slowly capturing people’s awareness due to its strong price performance. Rhodium is currently trading above $10000/Oz, making it five times more valuable than gold.
Rhodium is quite rare because it does not occur as a single mineral. It occurs in minute quantities with platinum and silver ore. This scarcity, coupled with the considerable demand for rhodium and its lustrous appearance, makes rhodium the most expensive metal.
Rhodium price vs gold
The price of rhodium can fluctuate immensely. At one time, it can rise to 10 times the price of gold and at other times equal the price of gold. Rhodium is therefore not a stable investment.
Where is rhodium found?
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Rhodium is the rarest element comprising minute quantities on the earth’s crust. Rhodium occurs uncombined in nature in the river sands of North and South America. The ores of platinum also contain a mixture of other metals like gold, silver, platinum, and palladium, which complicate its extraction process.
Significant sources of rhodium are found in South Africa, in the copper-nickel sulfide mining regions in Ontario, and river sands of the Ural Mountains in Russia.
Sources for recyclable rhodium include automotive catalytic converters, platinum-rhodium thermocouple wire, platinum-rhodium mesh, sheet, wire, rods, tubes, and foil.
Is rhodium magnetic?
You may have noticed that magnets attract pieces of rhodium-plated jewelry. Rhodium is a paramagnetic metal. This implies that a magnetic field will attract rhodium but not with a strong reaction observed with iron.
For rhodium plated jewelry, the attraction you observe is due to the nickel impurities present in the core material. Nickel is a ferromagnetic material, implying that a magnetic field strongly attracts it. The attraction is often weak because nickel impurities are present in trace quantities.
Does rhodium tarnish?
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Rhodium is considered a noble metal because it does not readily react with oxygen and therefore does not tarnish or corrode. Rhodium plating does not require a lot to maintain its smoothness and luster. Because it is hard and strong, rhodium is very durable.
However, it is quite brittle and does not bend easily. If the rhodium flashing thickness is too much, it will likely break because of its brittle nature. A thin rhodium coat will likely discolor, exposing the jewelry core to tarnishing and corroding.
While rhodium plating does not tarnish, it is likely to wear off with time. The lifespan of rhodium plating depends on the type of jewelry and the amount of friction on the jewelry.
Where to buy rhodium?
If you want to buy rhodium jewelry ranging from $20-$500, you can check Etsy. For example, you can buy a rhodium ring (a black rhodium engagement ring) that is affordable and of high quality and have the product delivered to your house fast.
Alternatively, if you want to buy high end rhodium jewelry ranging from $100-$2000, you can check Farfetch. They have luxury brands like Gucci, Prada, Boucheron, Cartier, Chopard, David Morris, De Beers and designer brands that are unique and less well-known. You can also have all the products delivered to your home.