By: Jeffrey M. Bertman Graduate GemologistNot only is the remarkable variety of chrysoberyl known as Alexandrite the birthstone for June, it is also used to celebrate 55th wedding anniversaries. It takes a lovely gemstone to mark such an important event, and Alexandrite certainly has a lot to recommend it. Most noticeable is Alexandrite’s ability to appear bright green in shorter-wavelength daylight while also having the ability to take on a rich red color in longerwavelength artificial light. These optical properties have earned it the reputation of being an “emerald by day and a ruby by night,” certainly good company in which to find itself. Aside from being remarkably beautiful, FLYING PAST 55! Alexandrite makes an excellent ring stone, with a hardness of 7.5 on the Mohs scale. Alexandrite is a truly remarkable gemstone. Depending on the light source, it can change from a beautiful teal to an alluring magenta. It is always a conversation starter.See our outstanding selection of beautiful offerings at 1402 Hancock Street, Quincy Center. Or reach us at 617-773-3636.