ADV Education
Australian Sapphire Guide
Australian Sapphire Guide Sapphires, among the world’s oldest gemstones, trace their origins back billions of years. These noble gems reflect the untamed beauty of the Australian wilderness, sourced from the...
Australian Sapphire Guide
Australian Sapphire Guide Sapphires, among the world’s oldest gemstones, trace their origins back billions of years. These noble gems reflect the untamed beauty of the Australian wilderness, sourced from the...
Australian Opal Guide
The Birth of Opal Precious opals were formed in the distant geological past when an inland sea covered much of the eastern half of the Australian continent. During the Cretaceous...
Australian Opal Guide
The Birth of Opal Precious opals were formed in the distant geological past when an inland sea covered much of the eastern half of the Australian continent. During the Cretaceous...
Argyle Pink Colour Chart Explained
The Argyle Pink Colour Chart was created by Argyle to grade the different shades, tones and saturations of Argyle pink diamonds accurately. It is found on Argyle Certificates, on Argyle...
Argyle Pink Colour Chart Explained
The Argyle Pink Colour Chart was created by Argyle to grade the different shades, tones and saturations of Argyle pink diamonds accurately. It is found on Argyle Certificates, on Argyle...