Diamond Education


The carat refers to the weight of a diamond, not its size. One carat is equal to 0.20 grams. GISELLE diamonds are always focused on the cut (maximum sparkle) or exceptional rare beauty (Antique diamonds), not the carat weight.


The weight of a diamond is indicated in carats and not its size, as is often believed. Therefore, diamonds with the identical carat weight can appear completely different in size.

This difference in appearance is especially noticeable in the different diamond shapes. It plays a big role how deep a diamond is cut. For example, a diamond can carry a lot of weight in its belly and therefore appear visually smaller. However, the carat weight is a good guide for a set budget. The price increases exponentially as the carat increases, as larger diamonds are much rarer and therefore more difficult to obtain.

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.

The sizes shown are for illustration of the proportions. The pictures do not reflect the actual size.

Question Giselle

Is more carat better?

No, the carat alone does not determine the value of a diamond. Between the same carat weight there are large price differences, because other factors such as cut, color and clarity must be considered. Therefore, the beauty and value of a diamond is not primarily defined by the carat alone.

Cut (Cut)

The biggest and most important factor in the appearance and sparkle of a diamond. Besides the different types of cuts, the cut especially means how the light is refracted in the diamond.


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.