In ancient times, there was a difference between “ทับทิม” in people’s mouth and modern ruby. ในเวลานั้น, ruby was not ruby in the true sense, but refers to all red gems, such as rubellite, red spinel, and garnet. , Rubies, เป็นต้น, and over time, the modern meaning of ruby is corundum ruby. ดังนั้น, นี้ […]
