Agorgeous series of Kanchanaburi sapphires from our craftsmen with eye-popping polish for bright, intense and colorful blues. Kanchanburi SapphireFrom Our Natural Earth™ Gemstone SeriesStarting at $140 Per Carat. Click the zoom or the link icon to review all detail. Rare & Collectible Kanchanaburi SapphiresIntense Blue Colors, Chevrons & Natural Geometric PatternsGet noticed and grow your sales with Kanchanaburi Sapphire, starting at $140 per carat.