Diamonds at 123GOLD

Diamonds are among the most special gemstones in the world of jewellery. They stand for love, durability and timeless elegance. At 123GOLD, the focus is on selected diamonds of the highest quality.

Every diamond has its own character. No stone is like another, and that is exactly what makes diamond jewellery so personal. The effect is created by the interplay of cut, colour, clarity and carat weight. These features are internationally known as the 4Cs and determine the quality and value of a diamond.

Certified diamonds at 123GOLD

Diamonds in the world of jewellery

A diamond brings light, depth and brilliance to a piece of jewellery. Even a small stone can completely change the effect of a ring.

The diamond is particularly popular as a solitaire, i.e. as a single main stone, for example in a classic engagement ring. But it is also very popular as a fine setting, for example in wedding rings, memoire rings or pieces of jewellery with several diamonds.

For your piece of jewellery to look harmonious, it is not only the size that matters. Cut, colour and clarity also play a major role.

Diamonds in the world of jewellery

The 4Cs explained briefly

The quality of a diamond is assessed using the 4Cs. They help you to compare diamonds better.

1

Carat – the carat weight

Carat describes the weight of the diamond. The higher the carat weight, the larger the stone appears. However, the value does not depend solely on the size.

2

Cut – the cut

The cut determines the brilliance, i.e. how strongly a diamond sparkles. A very good cut reflects the light optimally back to the eye.

3

Colour – the colour

For white diamonds, the rule is: the more colourless the stone, the more valuable it usually is. Very light diamonds appear particularly clear and brilliant.

4

Clarity – the clarity

Clarity describes whether a diamond has natural inclusions. Many of these are hardly visible to the naked eye. The purer the stone, the rarer it is.

Why certificates are important

A certificate makes the quality of a diamond transparent, it is like an identity card for the stone.

The following important features are documented:


  1. Carat weight
  2. Colour
  3. Clarity
  4. Cut
  5. Dimensions
  6. Certificate number

Certificates provide security, make diamonds comparable and help you to make a conscious decision.

Recognised testing institutes such as GIA or IGI assess diamonds according to international standards.

At 123GOLD, diamonds from 0.3 ct are certified and 3x Excellent.

Natural diamonds

Natural diamonds are formed over millions of years deep within the earth. They stand for rarity, tradition and lasting value. Every natural diamond is a true one-off. This makes it particularly interesting for pieces of jewellery with lasting significance, such as engagement rings, wedding rings or special gifts.

Lab grown diamonds in brief

Lab grown diamonds are real diamonds. However, they are not formed in the earth, but in the laboratory. In terms of appearance, chemistry and physics, they are identical to natural diamonds. The most important difference is their origin. Lab grown diamonds are less expensive than comparable natural diamonds, which means that larger stones or higher qualities are possible for the same budget.

Our diamond exchange

In the 123GOLD diamond exchange you will find a large selection of diamonds. There you can compare and filter the stones specifically.

For example by:


Shape, carat, colour, clarity, cut, polish, symmetry, fluorescence, price


This way you will find the diamond that perfectly matches your piece of jewellery and your budget. If you have any questions, we will be happy to advise you online, by phone or on site.

Would you like advice on site?

Book appointment

CUSTOMER REVIEWS

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Latest 6 Reviews


17.05.2026 Dortmund

War alles top.

17.05.2026 Dortmund

Ganz tolle Beratung. Der Berater/Verkäufer ist auf alles, was wir uns gewünscht haben, eingegangen.Man hatte nicht das Gefühl, das sie nur etwas verkaufen wollen.

17.05.2026 Ravensburg

Wir wurden sehr toll von Frau Karl beraten. Wir sind absolut zufrieden und begeistert.

17.05.2026 Berlin

Wir sind rundum zufrieden und vergeben gerne fünf Sterne!
Von der ersten Beratung bis zur Abholung hat alles perfekt gepasst. Die Beratung war sehr freundlich und kompetent, wir haben uns jederzeit gut aufgehoben gefühlt.

Unsere Trauringe sind wunderschön geworden und sehen genauso aus, wie wir sie gemeinsam gestaltet haben. Auch die Qualität überzeugt uns absolut. Vielen Dank für die tolle Betreuung und diese besondere Erinnerung fürs Leben!

15.05.2026 Hannover

Sehr gute Beratung. Pünktlich geliefert. Top

15.05.2026 Thüringen

Wir haben mit Frau Wernecke eine kompetente Beratung erfahren dürfen. Wir waren und sind sehr glücklich. Die Ringe waren pünktlich im Geschäft in Erfurt eingetroffen. Bei der Abholung gab es eine sehr schöne Zeremonie. Wir können 123 uneingeschränkt empfehlen. Daniela and Nasko aus Rudolstadt.