Decades of Firsthand Expertise
Since an individually arranged guided tour with DeBeers underground, in the world famous Premier Diamond Mine at Cullinan, South Africa, John has travelled the world extensively researching gemstones including, Madagascan fancy coloured sapphire, rubies & jade from Burma, sapphire & spinel from Thailand, tourmaline, aquamarine, emerald & topaz from Brazil, sapphire, tourmaline & moonstone from Sri Lanka.