Branko Deljanin (1), Matthias Alessandri (2) , Dr. Adolf Peretti (3) , Mikko Åström (4), Dr. Andrey Katrusha (5)…
Understanding diamond type classification is essential, especially nowadays. New diamond treatments and synthetics are hitting the market always more frequently . FTIR spectroscopy is an…
Large parcels of CVD-grown fancy blue and pink diamonds has appeared on the market. New generation of type IIa blue stones are even more difficult…
Synthetic diamonds grown by CVD-method (Chemical Vapor Deposition) have recently gained a lot of publicity in jewelry trade publications and triggered many alerts about…
MAGI has recently delivered it’s first GemmoRaman-532SG system to the National Assay Office of Latvia. Specifically designed as a custom system, the GemmoRaman-532SG represents…
HPHT (High Pressure High Temperature) treatment can be used to enhance the color grade of brownish or grayish type IIa diamonds to colorless or…
Raman spectroscopy is a fast method for separating jadeite from other jade types, including omphacite and nephrite. In many cases it is possible to…
New GemmoRaman-532 software version contains a customer inspired tool for rapid colorless and near colorless diamond screening. It separates diamond from all it’s simulants in…
Cultured fresh water pearls (CFWP) are frequently dyed with various substances for creating greater diversity and fulfilling the modern taste demand of colored pearls.…
Careful observation of exact chromium photoluminescence peak locations allows to make distinction or produces strong evidence in order to discriminate between natural and many…