Ruby Gemstone what you need to know GemstoneGuru Largest ruby ever to come to auction sells for record breaking $34.8 Loose Ruby Gemstone Prices at JENENGE blog Page 4 2,000+ Ruby Gem Pictures 16 X 12 MM Flawless 15.45 Ct Natural Mozambique Blood Red Ruby Gemstone 10 X 12 MM Flawless 9.10 Ct Natural Mozambique Blood Red Ruby Gemstone. The Love Knot ruby love knot ring. Red is the color for passion, protection and prosperity. It represents courage, confidence, strength, power, courageous, strength, determination and love. Apart from their amazing looks, Rubies are also popular for benefits like healthy sleep, improved energy and increased happiness. Ruby (1. 81ctw) 18k Yellow Gold