17. Nov IGC 2025 Blue sapphire from Malacacheta of Minas Gerais, Brazil Masaki Furuya Download Pdf Sapphire
17. Nov IGC 2025 A convincing glass imitation of larimar (pectolite) Larimar, a massive blue variety of the mineral pectolite, belonging to the wollastonite group of min Read More Elodie
17. Nov IGC 2025 Advancing Fei Cui Origin Authentication: A comparison of green fei cui from Myanmar, Guatemala, Italy and Russia In recent years, an increasing number of sources of fei cui, such as Guatemala, Italy and Russia, ha Read More Elodie
17. Nov IGC 2025 Bertrandite in Emeralds Over the past few years we have been seeing more and more lower quality stones in the lab. The reaso Read More Laurent Cartier
