В древни времена, there was a difference between “Руби” in people’s mouth and modern ruby. По това време, ruby was not ruby in the true sense, but refers to all red gems, като рубелит, Червен шпинел, и гранат. , Рубини, и т.н., и с течение на времето, the modern meaning of ruby is corundum ruby. Следователно, това […]
