Purplish Pink Spinel from Tajikistan: Before and After Cutting
Read MoreThis article describes what is known about the Wittelsbach Blue since it was first reported in 1666, and the gemmological information released to date on this diamond.
Read MoreThis article presents the first complete gemmological characterisation of the historic 128.48 ct Brazilian diamond known as the Star of the South.
Read MoreDuring the 1970s and 1980s, treasure hunters discovered the centuries-old remains of the sunken Spanish galleons Nuestra Señora de Atocha and Santa Margarita.
Read Morelapis-lazuli is an ornamental stone (figure 1) that has been found in the artefacts of some of the oldest known civilisations.
Read MoreAn overview of some of the most fabulous and famous diamonds that Harry Winston has known.
Read MoreTwo ecclesiastical objects of the late Gothic period (1350–1520) were investigated to identify the gemstones that adorn them.
Read MoreChinese master carvers have produced some of the world's most sophisticated gemstone carvings.
Read MoreSeveral famous and historical gemstones in the Smithsonian's collection are examined and reported on.
Read MoreWith the information from a combination of tools now available, the sophisticated gemmologist can fingerprint a given stone.
Read More
