Ruby is a gem of love and its name comes from the Sanskrit word “ratnaraj,” meaning the king of gems. This gem is said to give courage to the person who is wearing it to be the best potential person they can be. Ruby also encourages self-love. From the corundum mineral species, which includes sapphire, it is the birthstone for July and the 15th and 40th anniversary stone. All natural rubies have imperfections in them including inclusions of rutile needles known as silk. This is how a geologist can determine a real ruby from synthetics.