In search of ruby and sapphire on the lost Isle of Madagascar.
World auction records for ruby, sapphire and spinel.
An account of a 2013 visit to Mogok – Myanmar's fairy-tale wonderland.
In search of Thailand's last ruby miner.
One of the greatest gemological challenges is determining if a ruby or sapphire has been heat treated. UV fluorescence can assist in that identification, as well as detecting fillers in emerald.
Since the turn of the millennium, the price of fine spinel has risen at an incredible pace. No longer simply the poor man's ruby, spinel is finally getting the attention it deserves as one of the world's premier gems.
The mining of natural red andesine in Tibet has been a subject of controversy. This article describes RWH's second visit to the Tibetan deposit.
The subject of andesine in Tibet has been one of controversy since 2008. This article examines the history of the issue, along with detailing an October 2010 visit to the Tibetan andesine deposit.