Product Description for Min .50ct 5mm Round Ruby
Beautiful red ruby has been considered one of the most valuable gemstones on earth for thousands of years and is called "ratnaraj" ("King of Gemstones") in the Sanskrit language. Ruby is the red member of the corundum family, with all other colors of corundum being considered sapphire. Ruby ranks a hard 9 on the Mohs' scale, making it excellent for use in jewelry for its durability--not to mention its spectacular beauty. Some rubies are known to display asterism (stars).