APPRAISALS

Would you like to know whether the jewellery or precious gemstone you’ve inherited is worth something? Whether the jewellery you bought on your holiday abroad is really worth what the salesman charged you? Have you come into an inheritance and want to make sure nobody gains an unfair advantage and everyone is treated fairly? You may even have valuable jewellery or gems that you’d like to have insured.

Before a value can be set the material of a precious metal has to be analysed and a gemmological assessment of a gem has to be carried out. We have particularly valuable gemstones certified by internationally-recognised gemstone laboratories, such as the Swiss Foundation for the Research of Gemstones (Schweizerische Stiftung für Edelstein-Forschung SSEF). This specialised testing laboratory only tests the material scientifically and does not offer an appraisal.

How to get the goods to us

COURSES

Not only theoretical knowledge for the respective gemstones will be shared, but also the basics of Gemology will be taught. Moreover, the courses provide hands-on experience with professional gemological instruments. Subscriptions are subject to availability and legally binding.

Course I – 2020

DIAMOND SAPPHIRE AND RUBY
The fascination of gemstones – Introduction to gemology

In addition to an introduction to gemology (the science of precious stones), this course covers everything you need to know about diamonds – did you know that diamonds come in every color? – as well as the corundums, i.e. sapphires and the secret king of colored gemstones, the ruby.

Find out how they are created through their origin, processing, quality, retail prices and their syntheses, treatment methods and imitations. You also have the opportunity to work practically on gemological devices

Course II – 2021

BERYLL – TOURMALINE – QUARTZ
The fascination of gemstones – Introduction to gemology

In addition to the introduction to gemology (science of precious stones), this course covers everything worth knowing about the beryl group, i.e. the mysterious emerald, the aquamarine and the other beryls, the colorful tourmaline group – did you know that there is a tourmaline variety that is rarer and is more precious than the diamond? – as well as the diverse quartz group.

Find out how they are created through their origin, processing, quality, retail prices and their syntheses, treatment methods and imitations. You also have the opportunity to work practically on gemological devices.

Course III – 2021

TOPAZ – GARNET – SPINEL – OPAL
The fascination of gemstones – Introduction to gemology

In addition to the introduction to gemology (the science of gemstones), this course covers everything you need to know about topaz, the exciting garnet group – did you know that the most valuable garnets are green? – the spinels from the unknown gemstone to the superstar, the opals – one stone, hundreds of colors, how is that possible? – received

Find out how they are created through their origin, processing, qualities, retail prices as well as their syntheses, treatment methods, and imitations. You also have the opportunity to work practically on gemological devices.

Valuing jewellery

Two courses are being prepared.

The first one will provide travellers with a sort of ‘toolkit’ of simple but sound pointers to recognise imitations or synthetic stones and how they are different to natural gemstones or pearls.

The second course is being designed for experts from the jewellery industry as well as anyone who has to deal with jewellery in a professional capacity, such as the customs authorities and their investigative section, or the police.

This course is in preparation

OUR TEAM

Karl J. Vogler
Karl J. VoglerDirector, member of the board of directors, head of gemstones, Minerals Master of Science, certified gemmologist FGA
Karl J. Vogler’s passion for gemstones and jewels was born more than 30 years ago, during his geology and mineralogy studies. This was followed by a scientific job in the Gübelin gemmological laboratory and in his training as a diamond and gemstone expert, FGA. His expertise is further fortified by his many years of experience as an international gemstone and jewellery trader. Karl J. Vogler has a top-class and professional global network of business contacts.
Ingrid Gama
Ingrid GamaMember of the board of directors, head of administration

Ms Ingrid Gama has more than 30 years of professional experience in the watch and jewellery industry. On top of this Ingrid Gama, a trained commercial clerk, also brings with her ten years of experience in the field of administration and project coordination. For 15 years Ingrid Gama has been an official expert examiner for the practical final apprenticeships exams for retail trade professionals (EFZ) for the Swiss canton of Basel-Stadt.

Pascal Pfammatter
Pascal PfammatterHead of IT
Pascal Pfammatter has more than ten years of professional experience in the information technology industry. He has a well-founded knowledge in application development and in IT systems architecture.
He has realised various special applications for the Novartis pharmaceuticals corporation and is co-responsible for the establishment and continuous extension of Novartis’ mobility service.

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CONTACT

    Address

    Güterstrasse 82
    4053 Basel
    Switzerland
    Telephone +41 61 701 96 42

    Opening hours

    Special opening hours: Tuesday 30.5.2023 closed

    We have summer break from June 26, 2023 to July 25, 2023

    Mo: Closed
    Tu – Th 10.00 – 18.00h
    Sa – Su: Closed