Alexandrite gemstone
Alexandrite is named after the Russian tsar Alexander II (1818-1881) , the very first crystals having been discovered …
Benitoite Gemstone
Benitoite is a rare blue barium titanium silicate mineral, found in hydrothermally altered serpentinite . Benitoite …
Diamond collection brings deep Earth to the surface.
Diamond collection brings deep Earth to the surface Analysis of diamonds provides a look inside Earth's mantle Summ…
Chrysoberyl
The name chrysoberyl comes from the Greek words chrysos, meaning golden, and beryllos, which refers to its beryllium co…
Almandine
Almandine, also known incorrectly as almandite, is a species of mineral belonging to the garnet group. The name is a…
Amazonite
Amazonite (sometimes called " Amazon stone ") is a green variety of microcline feldspar . The name is taken f…
Amber Gemstone
Amber is fossilised tree resin (not sap), which has been appreciated for its colour and natural beauty since Neolithic…
Amethyst Gemstone
Amethyst is a violet variety of quartz often used in jewellery. The name comes from the ancient Greek ἀ a- ("not&…