1.Rubies are one of only four precious gemstones (hyperlink to article on precious gemstones), the other three being diamond, emerald and sapphire.
2.Corundum is a mineral that forms rubies and sapphires. If a corundum has a rich red color, it’s a ruby. If it’s any another color, it’s sapphire.
3.Ruby comes from the Latin word “rubens,” meaning “red.”
4.Corundum scores 9 on the Mohs scale, making ruby and sapphire the second-hardest gemstones after diamond.
5.The richest and most valuable red color of a ruby is “pigeon red” which is deep red with a shade of blue.
6.Inclusions, which are found in most rubies, play a huge factor in determining a real ruby from a synthetic one.
7.Though inclusions in a ruby can sometimes add to the beauty of a stone, if they affect its clarity, they can lead to a huge drop in its price.
8.Most rubies are not sold in their original state, but are treated
9.Red spinels used to be mistaken for rubies. It was only after the 18th century that it was found that the two stones have completely different properties.
10.Garnet is combined with pinkish-red glass to create a stimulated, valuable-looking ruby.
If anything, this provides a glimpse of the gemstone that has captured the minds and eyes for thousands of years. Whether as jewelry or even in literature, rubies have always played a significant role in inspiring artists and gemstone lovers regardless of their background or taste. For that, the ruby has always been considered a precious stone, inside and out.