Pink-orange gem quality euclase from Bahia, Brazil
Lætitia Gilles-Guéry
Rubies from Greenland
Gemology is traditionally practiced in laboratories, focused on identifying and analyzing gemstones.
Padparadscha Sapphire & heat treatment
In 2018 the Padparadscha engagement ring of Princess Eugenie (Figure 1), the niece of the king, gave
