This A-grade round ruby displays a pinkish-red color and is great accent in any design. Because ruby is high on the Mohs hardness scale, it is durable and ideal for any type of jewelry. Use it by itself to create a simple pendant, or combine it with an assortment of complementary-color stones to make more elaborate multicolor necklaces, bracelets, earrings, or rings. 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.
