Ruby Summary A ruby is a pink to blood-red colored gemstone, a variety of the mineral corundum (aluminium oxide). Its name comes from ruber, Latin for red. Referring entries Monday 16 November 1643 Further reading Wikipedia entry on ruby Sources Wikipedia Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Website Notify me of new posts by email. This site uses Akismet to reduce spam. Learn how your comment data is processed.