Gemology, faceting and concave faceting
Full week classes, 5 days each module.

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The Gemology class
emphasizes on the practical part of gem identification, for both rough and cut gems. The proper handling of the instruments, the correct lecture of the readout and the correct interpretation of the results are in focus, with a detailed introduction to the underlaying theory. We work with A.Krüss Optronics instruments and the Blue Chart gemstones identification tables by Nicolas Lazzarelli. Updated Edition 2019.

Microscope  7x - 45x
Microscope 7x - 45x
Iolite rough
Iolite rough
Iolite faceted
Iolite faceted

The Faceting class
( gemstone cutting ) is an introduction to precision faceting. With a detailed presentation of optical properties of gemstones and the laws which describe the paths of light. The precise faceting angles, corresponding to each mineral, will be calculated. With a discussion of ideas and exploration of how to optimize brilliance and light return in faceted gemstones. Several stones will be faceted in different faceting diagrams on Ultra-Tec V5 digital faceting machines. Best light return and brilliance is the goal. All stones you cut are yours to keep. The rough is provided. All stones are natural, no synthetics.

Faceted Citrine
Faceted Citrine
Faceted Garnet
Faceted Garnet
Faceted Tourmalin
Faceted Tourmalin

The Concave faceting class
widens the creative potential of the faceting technique and offres unlimited possibilities for the lapidary artist. In combination with a deep understanding of the properties of light, new horizons open up. Practical experience in faceting is required to benefit fully from this class module. We work on Ultra-Tec V5 digital faceting machines and Ultra-Tec fantasy machines. All stones you cut are yours to keep. The rough is provided. All stones are natural, no synthetics.

Concave faceting machine
Concave faceting machine
Concave faceted Amethyst
Concave faceted Amethyst
Concave faceted Citrine
Concave faceted Citrine
Concave faceted Amethyst
Concave faceted Amethyst
Concave faceted Citrine
Concave faceted Citrine
Concave faceted Quartz
Concave faceted Quartz

Each class module is available individually at CHF 800.-
The full set of all 3 modules is available at CHF 2'100.-

All instruments and machines are provided for classroom use.
Every student has access to a completely equipped workspace.


Schedule for 2024   in Montreux, Switzerland.


Gemstones cut during the 5 day faceting class.
4 - 5 stones where faceted per student.
November 2022


Orthoclas, Topaz, Garnet, Iolit

Citrin, Garnet, Iolit, Topaz, Peridot

Garnet, Amethyst, Orthoclas, Topaz

Garnet, Toapz, Zircon, Amethyst, Turmalin


Gemstones cut during the 5 day concave faceting class.
4 stones where faceted per student.
November 2022


Topaz, Amethyst, Amethyst, Citrin


Gemstones cut during the 5 day faceting class.
4 - 5 stones where faceted per student.
April 2022


Amethyst, Iolite, Peridot, Topaz, Citrine

Topaz, Scapolite, Amethyst, Garnet

Amethyst, Topaz, Citrine

Topaz, Garnet, Rhodolite Garnet, Scapolite

Citrine recut before and after