A ruby is a pinkish red to blood-red colored , a variety of the   (). Ruby is one of the most popular traditional jewelry gems and is very durable. Other varieties of gem-quality corundum are called . Ruby is one of the traditional , alongside , , , and . The word ruby comes from ruber,  for red. The color of a ruby is due to the element .

Some gemstones that are popularly or historically called rubies, such as the  in the British , are actually . These were once known as "Balas rubies".

Sterling Silver Clasp

18" with extender