Ruby - The SkyJems Gemstone Encyclopedia
Ruby
Ruby
Ruby is the red variety of corundum, drawing its colour exclusively from trace amounts of chromium. The most historically important rubies come from the Mogok Stone Tract in Myanmar (Burma), where marble-hosted geology produces stones very poor in iron, which allows for a highly fluorescent, intensely saturated “pigeon’s blood” red. Since the 2010s, large amphibolite-hosted deposits discovered at Montepuez in Mozambique have reshaped the supply side of the market, providing significant new volumes of fine red material.