Michael Loderer

Mag. Peter Sailer

Mag. Karin Schlager

Michael Loderer

Mag. Peter Sailer

Mag. Karin Schlager

A warm welcome at the Appraisers for Jewellery and Gemstones!


Diamonds, coloured gemstones, pearls, organic substances and precious metals are valuable resources in our modern age.

If you own jewellery, and you ask yourself the question about its value, then please contact us! We can answer your inquiry, and we will be happy to provide reliable advice within our domain „Jewellery, Precious Metals and Coloured Gemstones“ with regard to purchase, sale and insurance or inheritance matters.

Our portfolio includes various appraisals for private individuals, notaries and courts. Also with regard to the aquisition of diamonds and coloured gemstones you will be provided with profound and professional consultation. Objective testing of your valuables is always recommended, if you bring your jewels from abroad. In case of a break-in into private premises, jewellery, gemstones, watches and coins made of precious metals will be prone to theft as well, therefore it is advisable to create documentation, which confirms the value of your jewellery.

Michael Loderer

Carinthia & Styria

Legally sworn expert for jewels, precious metals and precious stones

Mag. Karin Schlager

Upper Austria & greater area Vienna

Private Appraiser for Jewels, Diamonds, Gemstones, Precious Metals & Fashion Jewellery

Mag. Peter Sailer

greater area Styria

Generally sworn and court-certified expert for the fields of minerals, raw precious stones and jewels, precious metals, precious stones


We distinguish ourselves through years of professional experience as well as national and international vocational education and training. Therefore we will generally be able to provide an individual qualified consultation tailored to your every need.

We recommend that you have an expert report prepared in the following cases:

  • Authenticity of diamonds, gems, cultured pearls and precious metals
  • Diamonds, gems or jewels and precious metals as collateral for loans
  • Rating for insurance purposes
  • Buying and selling diamonds, gems and jewellery
  • Diamond, gems or jewellery are inherited, inherited or given away

Our services also include:

  • Appraisals for guardianship and probates
  • Expertise for insurance
  • Expert opinions for private persons
  • Appraisals for courts, authorities and notaries

Should you have any further questions, please do not hesitate to contact us.


Member of the Diamond Club Vienna. Further information can be found at Diamant-Club Wien.

Loderer – Mobil: +43 (0) 664 / 341 84 48

Loderer – Phone: +43 (0) 4242 / 224 08

Schlager – Mobil: +43 (0) 664 / 87 55 222

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Michael Loderer

Adresse: Widmanngasse 42 / 1. Stock
A-9500 Villach
Mobil: +43 (0) 664 / 341 84 48
Telefon: +43 (0) 42 42 / 224 08
E-Mail: loderer.michael@aon.at
Homepage: dieschmuckgutachter.at, diejuwelengutachter.at

Mag. Peter Sailer

Adresse: Feldgasse 11
A – 8111 Judendorf-Strassengel
Mobil: +43 (0) 664 / 41 14 420
Telefon: +43 (0) 31 24 / 53 826
E-Mail: sailergems@hotmail.com

Mag. Karin Schlager

Mobil: +43 (0) 664 / 87 55 222

Homepage: goldschmiedemeisterin.at