By far the most important point is your trust in your seller. Buying a diamond is a matter of trust.

The most important factor we value most is the cut of a diamond. Only with a perfect cut does the diamond sparkle as breathtakingly as you wish. At GISELLE, we work with diamonds that are known for their cut. You can find out more about our diamonds here.

Then comes the carat (mainly determines the size/budget), followed by color and clarity.

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

With white gold & platinum, definitely choose G. With rose gold and yellow gold, an H is also quite legitimate, since the stone takes on a certain yellow tinge due to the alloy anyway.

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

We work with the Swiss ring size standards. You can find important tips & tricks in our ring size help (here) or from our jewelry experts in our boutique in Zurich.

In our GISELLE boutique at Bleicherweg 18 in the heart of Zurich you have the opportunity to try on the pieces of jewelry and to discover many other beautiful designs.

You would like to buy an engagement ring or wedding ring with installment payments, we would be happy to help you to fulfill your wishes.

The service is handled by a third party. Up to 15k (depending on creditworthiness) can be purchased in installments. You can find out more here.


Shipping is offered by GISELLE. Your finished piece of jewelery will be packaged in our GISELLE box and securely encased in a discreet shipping box. We ship with DHL against signature and with tracking option.

As soon as the piece of jewelry has been shipped, you will receive a shipping confirmation including tracking number.

Each piece of jewelry is made especially for you. Therefore we ask for a little patience. If the piece of jewelry is available in our boutique in Zurich, it can be shipped immediately. If not, we pass on the order to our in-house manufactory in Zurich for production. The respective production time can be found on the corresponding product page under.....

If you want to know if a piece of jewelry is available immediately, please contact our customer service at


Use this text to answer questions in as much detail as possible for your customers.

We offer our customers the best possible service, both before and after the purchase. If you notice after the engagement that the size does not fit perfectly, we offer a free size adjustment, provided that the difference is not too big. You can find detailed information on this here.