Gold has long held a place in fine jewellery for its beauty, versatility and enduring nature. From the warmth of yellow gold to the softness of rose and the luminous character of white, each has its own distinct and timeless appeal.
Beyond colour, however, lies another consideration: the purity of the gold itself. When choosing between 9k and 18k, the difference is found not only in the way the metal looks, but in what lies within it and how it can evolve over time with the wearer.
What Lies Within
Pure gold is 24 karats, but in jewellery it is combined with other metals to create an alloy with greater strength and wearability.
The karat refers to the proportion of pure gold within that alloy. 9k gold contains 37.5% pure gold, while 18k gold contains 75%.
The remaining metals are what help create the different tones of yellow, white and rose gold. The result is a spectrum of gold, each with its own character, yet beneath the surface, the proportion of pure gold remains an important distinction.
A Difference in Tone
Gold's natural colour is warm and rich, but the addition of different metals allows it to take on three distinctive expressions.
Yellow gold retains much of the warmth of pure gold, while rose gold takes on a blush hue through a greater presence of copper. White gold is created using lighter-coloured alloy metals, resulting in a softer, more luminous tone.
The karat of the gold also influences the depth of these colours. With its higher proportion of pure gold, 18k has a richness and saturation that can be particularly beautiful across all three hues.
Whether drawn to the warmth of yellow, the romance of rose or the understated luminosity of white, the choice of colour is deeply personal.
The Composition of White Gold
While white gold is created through the addition of lighter-coloured alloy metals, the composition of those alloys can vary significantly. At Hogans, we exclusively use a palladium alloy in our white gold, chosen for its ability to help maintain the metal’s colour and quality over time.
Palladium provides a naturally bright, white foundation, allowing our white gold to retain its luminous character while supporting the longevity and integrity of each piece. It is a considered choice that reflects our preference for quality not only in the gold itself, but in every element that goes into its composition.
Gold Over Time
The beauty of gold is in its ability to endure. Across yellow, white and rose gold, the proportion of alloy metals can influence how a piece responds to the elements over time.
With its higher alloy content, 9k gold can be more susceptible to changes in colour and finish, while 18k, with 75% pure gold, offers a greater sense of permanence.
Whether warm yellow, soft rose or luminous white, 18k gold retains the character of its chosen hue beautifully, making it particularly suited to jewellery intended to be worn, loved and treasured for years to come.
The Value of Purity
There is a quiet significance in the amount of gold within a piece. At 75% pure gold, 18k contains twice the gold content of 9k, giving it greater intrinsic value as well as its distinctive depth and richness.
Of course, the value of fine jewellery extends far beyond its metal. The design, craftsmanship, gemstones and the meaning attached to a piece all become part of its story.
A Considered Choice
Choosing between 9k and 18k ultimately comes down to personal preference, from the colour that speaks to you to the way you want your jewellery to wear over time.
Both offer the beauty and versatility of gold, but their differences in purity, composition and character are worth considering when selecting a piece intended to become part of your everyday life.
At Hogans, we have a particular appreciation for 18k gold. Its higher gold content brings depth to every colour and a sense of permanence to jewellery designed to be worn, loved and treasured for generations.
We welcome you to discover our collection via our online showroom, crafted from the finest precious materials in our on-site state-of-the-art workshop.
