【Montana, USA】Update on Montana’s Rock Creek Sapphire
Editor’s NoteThis article highlights the growing prominence of Montana’s Rock Creek sapphires in the global market, driven by Potentate Mining’s…
Montana sapphire
【Vancouver, W】Sourcing Stones with Columbia Gem House
Editor’s NoteThis article highlights the pioneering work of Eric Braunwart and Columbia Gem House in establishing ethical and traceable sourcing…