Ruby Stone is a natural, deep pink or blood red colored,
precious gemstone of the Corundum family. Ruby is one variety of the corundum
mineral species, which also includes sapphire. Ruby is highly regarded and can
command high per-carat prices. It is arguably one of the most important gems in
the colored stone market. In its purest form, the mineral corundum is
colorless. Trace elements that become part of the mineral’s crystal structure
cause variations in its color. Chromium is the trace element that causes ruby’s
red, which ranges from an orange red to a purplish red.