Gemstone appraisal in Paris

If you have a stone and don't know its value, our gemstone appraisal service in Paris can help you find out. What's more, if the value is significant, we can obtain a certificate of authenticity for you.

What you need to know about gem expertise in Paris

The purpose ofa gemstone appraisal is to determine the stone's value. To do this, you need a gemologist, jeweler or jeweller, who must be experienced in this field and have the necessary equipment.

The completeness of the appraisal depends on the information you need. But with a gemmologist, you get all the information you need to determine the price of a gemstone:

• the nature of the stone, for example a diamond,
• its color (hue, tone and saturation),
• its size or cut (round, oval...) and the quality of its proportions and symmetry,
• its origin,
• purity (depending on inclusions)
• any treatments applied: traditional heating does little or nothing to alter the value of a stone, as with heated sapphire, but other treatments significantly reduce its price;
• carats.

A gemmologist can provide you with a laboratory certificate, to make this appraisal official and attest to the value. As gemstone appraisals in Paris vary according to the professional's services and the testing equipment at his disposal, it is sometimes possible to have a stone identified alone. This is what some people are looking for. For example, to recognize a sapphire, or am I in possession of a genuine ruby?

Use maison Bonnot to obtain an estimate in euros.

We also offer gemmological services in Angers.

We value your precious stones in Paris

La maison Bonnot appraises your precious stone in Paris and provides you with all the information you need to know about its value. With the ever-changing gem market, it's a good idea to call in a jewelry expert in Paris. In addition to the increasing difficulty of finding certain stones naturally, this market is experiencing trends. A stone of no great value a few years ago can become increasingly sought-after. This is what is happening with green sapphire, for example.

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Why have your stone survey done at Bonnot Paris?

When you choose to have your gemstones appraised by Bonnot Paris, you are dealing with a professional gemmologist and gem trader who works without intermediaries. Appraisals are complex, dictated by a multitude of interdependent criteria. They require perfect mastery of different tools and reference to highly precise technical criteria. Gemmology is a scientific discipline that cannot be improvised.

Bonnot Paris is also a jeweller. This dual expertise is ideal for having your stones or jewels appraised and benefiting from the best advice on buying back precious stones or setting them in a new creation.

The price of a gemstone appraisal

• An expert opinion costs €150.
• A certificate from the French gemmological laboratory costs 150€.

Obviously, online gemstone appraisal is impossible. It is essential to hand over your stones to us for a proper appraisal. Authenticating and appraising a gemstone in Paris usually takes an hour, although some appraisals can take longer.