This round ruby cabochon makes a great accent, adding a spark of highly desirable pinkish-red color to any design. Because ruby is high on the Mohs hardness scale, it is durable and ideal for any type of jewelry, even those that see the most wear and tear. Use it by itself to create a simple pendant, or combine it with an assortment of complementary-color gemstones 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 gemstone, 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.
