Spinel ruby is a beautiful gemstone that has been valued for centuries for its rich, deep red color and durability. There are many synonyms for spinel ruby, including "balas ruby", "ruby spinel", and "almandine ruby". Balas ruby is named after the ancient Persian city of Balascia, where the gemstone was once mined. Ruby spinel is simply another way of referring to spinel ruby, while almandine ruby is a type of garnet that has a similar hue to spinel ruby. Other synonyms for spinel ruby include "Siam ruby", "Pegu ruby", and "Burma ruby", all of which refer to specific geographic locations where high-quality spinel rubies have historically been found.