Although black gold is not very well known in the world of jewellery. In recent years this has been changing and its popularity has been increasing thanks to its unique and avant-garde appearance. Definitely a bold and unconventional jewellery choice, but one that is still striking and beautiful in appearance.
Although, other metals with this tonality are used in jewellery, black gold has different advantages, which makes it stand out from the rest. So, if you want to know a little more about this new material, in this article we will tell you everything you need to know.
What is black gold?
Although black gold does not exist as such, since naturally gold is yellow. Currently, thanks to new technologies and methods, different varieties of gold can be obtained. Like yellow gold, they have also become popular, among them we have rose gold, green, white, blue and of course black. Therefore, it is only yellow gold that has been treated to transform its natural colour.
How can black gold be created?
There are three different ways to create gold with this hue, which are:
Alloys
To create black gold using this method, yellow gold is generally mixed with another metal such as cobalt. In a ratio that is normally 3 parts gold to 1-part metal. However, although the result is called an alloy, in reality it is not. Well, the black colour is only on the surface unlike the other gold alloys where metals are combined.
Electrodeposition
In this method that by the way is the most used to create black gold, as it is the most affordable option. The gold jewel is covered with a layer of precious metal with a black finish, which is usually black rhodium or ruthenium. The rhodium mixture, for example, gives gold a shiny, polished surface. While ruthenium provides a slightly harder coating.
However, electroplating has the disadvantage that, over time, the colour disappears and the part needs to be recoated.
Femto-second laser treatment
Using this recently discovered method, colour is formed through the creation of nanostructures on the surface of the metal. An effect that is achieved with the use of a powerful femto-second laser, which is capable of applying large amounts of focused energy on the surface. Making it absorb all the light that falls on it, which results in a deeply black metal. Thus being the most durable method.
But unfortunately it is the least used as it is extremely expensive. Therefore, the black gold jewellery that currently exists is not the result of this method. Although in the future if this technology becomes more affordable, it would provide the jewellery industry with a very durable version of black gold.
What is its value?
Like other types of coloured gold, the value of black gold depends on the amount of pure gold in the jewel. Since the black metals that are used to create black gold do not add or diminish the original value of the gold. That is, the higher the percentage of gold, the more valuable the piece will be. Also, as gold maintains its value, the value of black gold will also remain constant.
Black gold compared to other black materials
Currently, in addition to black gold, in the world of jewellery we have other black materials that also have their advantages. These include:
Black tungsten
It is actually a composite material of tungsten carbide. An alloy of 80% tungsten and 20% of a mixture of carbon and other metals. It is very resistant to scratching and able to maintain its finish for a long time. In addition, it is hypoallergenic and very economical. Although the only disadvantage is that it can break if it receives a strong blow.
Black ceramic jewellery
The eternal shine and its uniform colour throughout the piece are the main characteristics for which it is known in jewellery. Where it is mainly used to make rings, being a very affordable option. Unfortunately, like tungsten, this material can break or crack if it is bumped or dropped.
Black titanium
Black titanium is an affordable, extremely durable, lightweight, and corrosion resistant material. It is also smooth, shiny and has hypoallergenic properties. However, its main disadvantage is that it cannot be resized, making it costly to make it smaller or larger. In addition, its surface can show marks and scratches over time.
Black carbon fibre
Although it is not a metal, this material is very strong, durable, highly resistant to heat and quite light. Other advantages are its affordable price, its hypoallergenic properties and little wear with use. Besides that, it is easy to combine with other noble metals such as gold and platinum.
After analysing these options, you probably noticed that they all have their pros and in some cases, also their cons. However, black gold is not as hard, scratch resistant, or as durable as the materials mentioned. But as it contains gold in its composition, it is much more valuable.
In addition, it has an advantage, compared to other black materials such as tungsten or carbon fibre. And it is that it can be easily resized. Although resizing jewellery often requires recolouring, it is a useful option.
Black gold jewellery
The colour black is not very common in jewellery, which is why black jewellery is very striking. With the addition that they are very elegant, daring, and perfect to wear on any occasion.
However, as it is not a conventional colour in jewellery, buying black gold jewellery can be a difficult task. Although currently the use of engagement rings in black gold has become very popular. Becoming a modern and alternative for those who want to get away from the traditional.
We find them together with colourless diamonds that give the rings a beautiful contrast and adapt to any occasion. But black gold ring settings can be combined with any gemstone. For example, for a solid black look, it can be paired with stones like black diamonds, black onyx, or black moissanite.
On the other hand, if we want a contrast a little stronger and with more colour. A coloured stone such as amethyst, sapphire or ruby set in black gold, will accentuate its beauty. On the other hand, it must be taken into account that the pendants and earrings with this material are more durable. And they will require less maintenance than rings since the latter is subject to greater exposure.
What if I do not like my black gold jewellery?
The colour in this metal is the product of a surface treatment. But it is not permanent, so it is possible to recolour your black gold jewellery with another colour. For example, they can be turned into white gold with a clear rhodium plating. Which represents less investment risk.
Jewellery coating
Since most of the black gold jewellery that exists is plated, this coating will inevitably fade over time. Additionally, whenever black gold jewellery is scratched or scraped, the gold under the black coating is exposed, known as “bleeding.” Therefore, if we want to maintain its colour, the piece must be re-plated.
Unfortunately, depending on the wear and tear on the jewellery, it may need to be re-plated every 6 months to every two years. What represents a continuous expense and that can cost approximately between 35 and 60 dollars each time that is required.
Caregiving
- To avoid scratching the black gold and exposing the gold underneath, we must avoid rubbing or hitting the jewellery at all costs.
- To clean black gold jewellery, it is sufficient to use a warm soapy water solution. Also using a soft bristle brush to remove dirt and a cotton cloth to soften it.
- If for any reason you notice that the veneer is disappearing. It is best to take it to a jeweller to regain its colour, shine and splendour.
- When storing black gold jewellery, it is best to place it in a cloth bag or lined box. This will prevent contact with other pieces of jewellery and keep them scratch-free.
ALFA