23. Oct IGC 2023 Colour change Paraiba tourmaline from Brazil By Claudio C. Milisenda, Stefan Müller Download Pdf Tourmaline
23. Oct IGC 2023 Rose Quartz: Journey Into the Nano-Jungle Massive rose quartz is a readily available mineral ranging in colour from pink to salmon- or lavende Read More Elodie
23. Oct IGC 2023 Low Temperature Heat Treatment of Burmese Ruby Detection of low-temperature heat treatment (below 1200°C) in ruby and sapphire can present challen Read More Elodie
23. Oct IGC 2023 Violet Diamonds from Argyle: New Insights into the Cause of their Unique Color Until its recent closure, the Argyle mine in Australia has been the only source of uniquely colored Read More Elodie
