Ruby is red Corundum, an aluminum oxide mineral with chromium responsible for its red color. Natural Rubies have imperfections within them, including color impurities and inclusions of Rutile needles known as silk. When Rubies are polished, they can display a chatoyancy, or “cat’s eye” effect, or in the case of a Star Ruby will display a star effect called asterism.
Chemical Formula: Al₂O₃
Hardness: 9
***NOTE TO BUYER***
This is a "random selection" listing. You will NOT receive the exact item photographed in the listing, but one that is very similar. However, due to the unique nature of each mineral, the size, shape, and color may vary slightly.
Please reference secondary photos for examples of variations within the product. If you have certain specification requirements, please reach out via email.
