في العصور القديمة, there was a difference between “روبي” in people’s mouth and modern ruby. At that time, ruby was not ruby in the true sense, but refers to all red gems, such as rubellite, الإسبنيل الأحمر, والعقيق. , Rubies, إلخ., and over time, the modern meaning of ruby is corundum ruby. لذلك, this […]
