Gold Demand Trends Q3 2020
November 3 202029 October, 2020
Q3 gold demand 19% lower y-o-y at 892t
Strong growth in global investment demand for gold in Q3 partly offset weakness elsewhere as COVID-19 remained …
Rio Tinto ends mining at Argyle
November 3 2020Rio Tinto will dig the last diamonds up from the ground at its Argyle deposit in Australia on Tuesday, marking the end of an era in the industry. The company will continue to sif…
Coloured Stone Guide – Emeralds
October 3 2020Belonging to the beryl family
The third stone in this series on the more well-known (and sometimes lesser known) gemstones covers emerald. In the same way as ruby and sapphire w…
Coloured Stone Guide – Sapphires
September 3 2020So what is sapphire?
Sapphire and ruby are basically the same stone, corundum, which, as we saw, is comprised of aluminium and oxygen. The difference with sapphire though is that …
An Unusual Corundum Doublet
August 3 2020Summary of ‘A Lead-Glass-Filled Corundum Doublet’ by Supparat Promwongnan, Thanong Leelawatanasuk and Saengthip Saengbuangamlam.
This Gemmological Brief describes a 1. …