Ruby is the birthstone for July. It is second only in hardness to a diamond and one of the 4 precious gem stones, diamond, ruby, Safire and emerald.
The well respected Gem Institute of America offers an in-depth look at this beautiful gem.
https://www.gia.edu/birthstones/july-birthstones
Gemselect.com offers a look at a few famous wine rubies.
https://www.gemselect.com/other-info/a-few-famous-fine-rubies.php
www.gia.edu
