June-borns are lucky enough to have a stone that plays two roles at once as their birthstone. Yes, alexandrite, or we may say "emerald by day, ruby by night," is a sharp-coloured rare variety of the chrysoberyl mineral. Due to this color-changing ability of the stone, it is also known as the "Chameleon Stone". Alexandrite is not only the traditional birthstone for June but is also a rare and valuable find. Since it was discovered in the 1830s, the love and demand for this stone have only grown with time. After all, it is very hard to take your eyes off a gemstone that keeps changing its color under different lights.