Diamond Education


The cut is the most decisive factor for the beauty of the gemstone. The only man-made component. The cut is the art and craft of a cutter to make the stone sparkle.
The cut is determined by symmetry, proportions and polish.


Two diamonds can be identical in color, clarity, and carat weight, but in the end, the cut determines whether one is superior to the other. The cut is the only man-made component. It is the cut that gives the diamond its sparkling charm. In the end, the cut defines whether and how a diamond sparkles. At GISELLE, we therefore place the greatest value on the cut of a diamond. We prioritize brilliance over carat weight and certificate.

We accept no compromise and exceed industry standards, so our diamonds stand out from those of other jewelers.
Three factors determine the cut of a diamond:

The relationship of size and angles to other parts of the gemstone.

How precisely the different facets of a diamond are aligned and overlap.

The details and placement of the facet shapes, as well as the outer finish of the diamond.

Our jewelry experts at GISELLE are always here for you. Of course, you are also welcome to visit us in our GISELLE boutique in Zurich without any obligation.

Question Giselle


Simply put, the cut is crucial to the quality of the sparkle of a diamond. In my eyes, the most important factor. A poorly cut diamond looks dull despite high color quality and high clarity.
GISELLE diamonds sparkle more! Almost all cutters work GIA or Carat oriented to get the maximum price out of the rough diamond.
I work with a cutter that works Sparkle oriented! Their technique maximizes the sparkle of the stones.


The carat refers to the weight of a diamond. Not, as many mistakenly think, the size.


The color means, among other things, the natural coloring of a diamond.


Clarity refers to the number, size, type and position of natural inclusions in the diamond. Different inclusions are rated differently, as not all are equally visible.


There is no right or wrong here. It depends on the wearer.

Most of our customers are attracted to 1ct-2ct (visually). But there are also ladies who prefer a large size from 3ct, or the complete opposite, ladies who want a small mini stone (about 0.05ct).

If you have no idea what your beloved wants, then I recommend you to buy a diamond from 0.50ct to 1ct. Even with petite women this does not look too big and should the woman want a bigger look, you could do a so called upgrading.

Diamonds are measured in carats. One carat is equal to 0.20 grams.

For a medium budget we recommend as a good standard quality color G/H and Si1.

For white gold & platinum, choose G in any case. For rose gold and yellow gold, an H is also quite legitimate, as the stone takes on a certain yellow tint due to the alloy anyway.

With Si1, you can expect an "eye-clean" diamond. The inclusions are especially visible under a magnifying glass.
However, we do not recommend going below Si1. The inclusions can be visible to the naked eye and can severely diminish the sparkle.

You want to buy an engagement ring, wedding ring or jewelry with installment? We will be very happy to help you fulfill your wishes. The service is handled by a third party, Heidipay. Up to 10k (absolutely without interest) can be obtained in up to 12 installments.

visit our

Diamond Lounge

a place full of beauty and elegance. We invite you to visit us to discover our unique jewelry and choose from our exquisite diamonds and gemstones. Enjoy a personalized consultation, tailored to your needs by one of our experienced experts.

Treat yourself to some time out and immerse yourself in the magical world of the treasures of this earth. Our Diamond Lounge offers you the perfect environment to relax and admire the exquisite craftsmanship of our designs.

We recommend making an appointment in advance to ensure we can provide you with the best possible experience without the wait.