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Objective, independent, transparent.
Our sworn and court-certified experts provide expert opinions for diamonds, gemstones and jewelry that are internationally recognized by courts, authorities, auction houses and gemstone dealers.
For auction houses, gemstone dealers, courts and authorities, gemmological reports are nowadays essential to ensure the authenticity and quality of gemstones. In addition to natural gemstones, imitations and syntheses are also offered on the market, which are usually indistinguishable from genuine stones to the naked eye or even under a magnifying glass.In order to determine the actual value of a gemstone, extensive specialist knowledge, state-of-the-art technical equipment and many years of experience are essential.
MSt.in Adeline Lageder, a sworn and court-certified expert for jewelry, precious metals and gemstones, has managed the Gemmological Laboratory Austria (GLA) in Vienna’s city center since 2006 and has led it to international renown through the continuous development of analytical methods and regular certifications. The GLA was founded in 1979 by the renowned Austrian gemologist Professor Walter Mican, who developed his own graduation system for the objective quality determination of colored gemstones.
Determination of the quality and diagnosis of possible value-reducing treatments and site diagnostics
Examination for crack fillings with foreign material or other modifications as well as site diagnostics
Determination of the quality and diagnosis of possible value-reducing treatments and site diagnostics
Independent and rapid preparation of expert opinions for authorities, notaries and courts, usually within 4 to 5 working days.
The following customers from Austria and Central Europe rely on the excellent reputation of our in-house laboratory:
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