18 carat gold, 18k gold, personalised jewellery, customisable jewellery, made-to-measure jewellery

Why choose 18-carat gold?

Gold jewellery has always been a symbol of prestige and sophistication. Among the various options available, 18-carat gold jewellery stands out for its exceptional quality and lasting lustre.

Our Thea Jewelry brand is committed to creating exceptional jewellery. By combining our artisanal expertise with the purity of 18-carat gold, we create jewellery of the highest quality. Each piece is designed to last, so that you can cherish it and pass it down through the generations. Your jewellery will become a precious heirloom.


Here are a few reasons why you should opt for this type of jewellery:

Purity and durability

One of the main properties of gold is that it is naturally soft and malleable. Combining it with other metals to create an alloy increases its hardness, changes its colour and, above all, makes jewellery simpler and more resistant to wear. Pure gold (24 carat or 24k) is rarely used to create jewellery; it is generally used for investment purposes. When gold has a lower carat value, such as 18 carats (18k) or 14 carats (14k), this means that it is mixed with other metals to create a harder, more resistant alloy. The metals commonly used to strengthen gold are silver, zinc, copper and nickel.

24-carat gold is considered to be the purest form of gold, containing little or no other metals. However, because of its extremely soft nature, it is not commonly used for jewellery, as it is more susceptible to deformation or damage.

18-carat gold jewellery is an alloy made up of 75% of pure gold and 25% of other metals, such as silver or copper. This combination gives the jewellery greater strength and durability than 24-carat gold. Opting for 18-carat gold jewellery ensures that your pieces will stand the test of time. They will retain their beauty for years to come.

Radiance and shine

18-carat gold has a richer, more intense hue than other gold alloys. Its balanced composition allows the jewellery to shine brilliantly. You'll attract attention and add a touch of glamour to your appearance. Whether you opt for a bracelet, necklace or ring, you're sure to make a remarkable style statement.


As well as its aesthetic appeal, 18-carat gold jewellery is also a valuable investment. Gold is a precious metal whose value has risen through the ages, making it a solid form of investment. By choosing this jewellery, you combine beauty with timeless style that can be passed down from generation to generation.


Create my own piece of 18-carat gold jewellery