Ruby has a color range of red, slightly bluish red known as "pigeon blood red", slightly purplish red, strongly purplish red, and orangy red. The finest color is a vivid, almost pure spectral red with a very faint undertone of blue, as seen in Burmese ruby. The color of ruby is due to impurities of iron and chromium content. High chromium content creates the best colored ruby but at a cost. Chromium inhibits crystal growth so ruby gems of over three carats are very rare.
The origin for the name ruby is thought to be from the Latin word "rubrum" meaning red. It was not until about 1800 that ruby, as well as sapphire, was recognized as belonging to the corundum species. Before that date, red spinel and red garnet were also designated as ruby.
Burmese RubyTreatment: heat
Amount: insignificant to minor residue
Origin: Myanmar, Mong Hsu
Shape: Round modified brilliant cut
Clarity: VS eye clean
Weight: 2.12 carats
Color: Vivid Red
Beautiful vivid red color with a velvety luster. Excellent brilliant cut with no excess weight. VS, eye clean clarity. hard to find 7.62 millimeter diameter, large for ruby. This jewel comes with a AGL prestige report a $500 value