#Necklace #Accessories #NaturalStone Brand new. This is a ruby, a red natural stone, and a terahertz tornado ring, said to be good for health. It's a contrasting ring of jet-black jewelry and a shining red ruby. It's a pleasing free size! In ancient times, rubies were called the king of gems and were highly revered. Although it's black, as you can see, the red color provides an accent, making it sparkle and shine. It has a brilliance like a black diamond. Also, although it's black, it's jewelry that is never dull. And it's healthy! It's wonderful jewelry.