An alexandrite – a breathtaking aquamarine stone – on the other hand, is the rarest of all gems. According to Henry Kennedy, of Elizabeth, the man who mined the stone in Brazil, there are no ...

It was also the subject of the 19th-century page-turner Alexandrite ... topaz is very rare, though light blue varieties are found in Texas, where it happens to be the state stone.

The very rare gems were discovered in 1987 by determined ... The amazing color-changing stone alexandrite was discovered in 1830 in the Ural Mountains in Russia and named after Tsar Alexander ...

The gemstone seemed to change color at times ... (A standard household light bulb is incandescent.) Alexandrite, even with recent finds, is still quite expensive because it is rare. When this jewel is ...

Discovered only in the 1830s, Alexandrite is the rare gemstone with a remarkable ability to apparently change color. One of the most expensive examples sold is an unmounted, 21.41-carat ...

What exactly makes a gemstone rare and valuable ... Known for its remarkable color-changing ability, Alexandrite appears green in daylight and red in incandescent light. This chameleon-like ...

All of June's gemstone options are exceptionally rare and valuable. Jarmon explains their scarcity: "Alexandrite is very rare and very expensive—it is considered to be one of the rarest ...