Meet Our Star Ruby, Like all varieties of grapefruit, the ruby red contains plenty of the antioxidant-rich vitamins C and A as well as dietary fiber, add to that a delightful taste and  enjoy it as juice or for eating, These fruits support clear, healthy skin, can help to lower our risk for many diseases and conditions, and may even help with weight loss as part of a healthy and varied diet. The juices, peels, and pulps all provide nutritional benefit.