Amber and its treatments: A New Baltic Amber Classification Chart
Costanzo A., Klikowicz-Kosior A., Kosior M.
Gem zircon and sapphire age dating and application of origin determination: A study from New England sapphire fields, New South Wales, Australia
Ahmadjan Abduryim, Frederick Lin Sutherland, Terry Coldham, Elena Belousova Download Pdf
Gemological Characteristics of New Transparent Brown Sapphire
A newly observed variety of faceted transparent brown sapphire has recently entered the gem market,
Rubies from Greenland
Gemology is traditionally practiced in laboratories, focused on identifying and analyzing gemstones.