Gem zircon and sapphire age dating and application of origin determination: A study from New England sapphire fields, New South Wales, Australia

The identification of pigments is carried out routinely mostly by X-ray diffraction, FTIR and Raman

For many, fossiliferous tree resin, primarily amber, gained wide visibility to the public in 1993 wh

When it comes to the geographic origin of gems, curiously enough, historians sometimes put forward p