What is a precious metal?
A precious metal is a rare metal, naturally sought after for its physical, chemical, and economic qualities. It is distinguished by its resistance to corrosion, its stability over time, its luster, and its market value. Unlike many more common metals, it generally retains its properties well, even when exposed to air, humidity, or certain harsh conditions. They are found in the manufacture of jewelry and decorative items as well as in investment, electronics, medicine, industry, and certain advanced technologies.
What are the main precious metals used in jewelry?
Gold
Gold is one of the most popular metals in jewelry. It is renowned for its versatility, durability, and the variety of styles it allows to create. In its pure state, gold has a naturally warm yellow color, but it is too malleable to be used alone in most everyday jewelry. It is therefore mixed with other metals to obtain a stronger alloy better suited for manufacturing rings, necklaces, bracelets, and wedding bands.
Carat indicates the proportion of pure gold present in the alloy. This is what allows the creation of 10K gold, 14K gold, or 18K gold. For example, 18K gold contains more pure gold than 14K gold, which influences its value, color, and resistance. The choice of carat therefore depends on the type of jewelry, the budget, and the intended use.
Gold can also take on different shades depending on the metals added to the alloy. Yellow gold maintains its classic and warm appearance thanks to a balance between pure gold, silver, and copper. White gold offers a lighter and more modern look; it is often composed with pale metals like palladium or silver, then coated with rhodium to enhance its whiteness. Rose gold, for its part, owes its soft color to a greater presence of copper in the alloy.
There are also less common variations, such as red gold, green gold, grey gold, or black gold. Red gold generally contains more copper than rose gold, which gives it a more intense hue. The other colors often result from specific creations or treatments. For everyday jewelry, the most popular choices remain yellow gold, white gold, and rose gold, especially in 14K or 18K.
Silver
Silver is a precious metal known for its bright luster, malleability, and accessibility. In its pure state, however, it is too soft to be suitable for most regularly worn jewelry. This is why it is usually mixed with other metals to create a stronger and more durable alloy.
In jewelry, the most common form is sterling silver, composed of 92.5% pure silver and 7.5% other metals, usually copper. It is often recognized by the 925 hallmark. It is widely used for delicate jewelry, accessible creations, and pieces worn occasionally.
Although elegant, sterling silver requires more maintenance than gold or platinum. It can tarnish over time when exposed to air, humidity, perfumes, or certain chemicals. Regular cleaning, however, can restore its shine.
Platinum
Platinum is a rare, dense, naturally white precious metal. It is known for its great durability, wear resistance, and sober, elegant appearance. Unlike other metals, its light color is natural: it does not need to be plated to maintain its whiteness.
In jewelry, platinum is often used in high-purity alloys to improve its workability while retaining its main qualities. It is particularly valued for high-end engagement rings and wedding bands, especially because it is very durable and holds stones securely in place.
Over the years, platinum does not yellow. Instead, it develops a natural patina, which gives it a unique character and bears witness to the passage of time. However, its weight, rarity, and durability make it a more expensive metal than gold or sterling silver.
Why use precious metals in jewelry?
Precious metals are chosen for their beauty, durability, and value. Unlike base metals, they are better suited for jewelry worn for a long time, repaired over the years, or passed down from one generation to the next.
They also allow for true jewelry craftsmanship. A gold or platinum ring can often be resized, repaired, polished, transformed, or reset. This is a significant advantage when it comes to a symbolic piece of jewelry, such as an engagement ring, a wedding band, or a custom creation.
Frequently Asked Questions About Precious Metals
For a piece of jewelry worn daily, gold and platinum are often the best choices due to their durability, value, and ease of maintenance or repair. Sterling silver can also be suitable, but it requires more care and is less resistant to constant wear.
Yes, several precious metal jewels can be repaired, polished, or adjusted by a jeweler. Gold and platinum are generally easy to work with, while sterling silver can also be repaired in some cases, depending on the condition, thickness, and craftsmanship of the jewel.
Yes. Silver is considered a precious metal. In jewelry, it is usually used in the form of 925 sterling silver to make it stronger.
Platinum and yellow gold generally require less maintenance than sterling silver or rhodium-plated white gold. Silver can tarnish, while white gold may need re-rhodium plating after a few years.