Burmese “pigeon blood” rubies represent the pinnacle of colored gemstone collecting due to their perfect combination of saturated red color without purple or orange undertones, exceptional fluorescence that creates an internal glow, and their extreme geological rarity. The legendary Mogok Valley deposits produce stones with uniquely perfect chromium content that creates their distinctive hue, unmatched by rubies from other locations. Historical significance and diminishing supply as these mines become depleted have driven continual price appreciation, with exceptional specimens achieving over $1 million per carat at international auctions. For investment-grade stones, certification specifically identifying Burmese origin and “pigeon blood” classification significantly impacts value.