This AAA-grade round ruby has the deep red color and durability that makes ruby one of the world's most desirable gemstones. This gem shows the superior cut, color saturation and active scintillation required to be classified as a top-quality AAA-grade gemstone. Use the gemstone in rings, earrings or to add a classic ruby-red accent to a larger jewelry design. Ruby is the birthstone for July. Ruby, a variety of corundum classified as a precious gem, is one of the world's most valuable gemstones. With its hardness and durability, ruby is an excellent choice for all types of jewelry. The color of a ruby is due to a trace of chromium in the gemstone; the amount of this substance determines the depth of color. Through the ages, ruby has been considered to be a gem of nobility, credited with engendering sensuality and vitality. Round-cut gemstones are highly popular and the most commonly available. Rio round gemstones are calibrated for size and hand inspected to ensure maximum attractiveness.
