Ceylon Natural Chrysoberyl Alexandrite 锡兰天然金绿宝石翠绿
Alexandrite is a rare variety of chrysoberyl family and invest in a such gem piece generate money.
Natural Alexandrite is a rare gemstone and its a good investment.
Colour : Color change from Orangish Green to Orange
Shape : Cushion
Cut : Rectangular Antique Cut
Weight : 24.05 CTS
Dimension : 16.75 x 13.71 x 11.64 mm
重量 : 24.05 卡拉
尺寸 : 16.75 x 13.71 x 11.64 mm
颜色 : 颜色改变绿色到红色
透明 : 好透明
形状 : 垫形
With its chameleon-like qualities, is a rare variety of the mineral chrysoberyl. Its color can be a lovely green in daylight or fluorescent light, changing to brownish or purplish red in the incandescent light from a lamp or candle flame. This is a result of the complex way the mineral absorbs light.
Its dramatic color change is sometimes described as “emerald by day, ruby by night.” Other gems also change color in response to a light-source change, but this gem’s transformation is so striking that the phenomenon itself is often called “the alexandrite effect.”
It is also a strongly pleochroic gem, which means it can show different colors when viewed from different directions. Typically, its three pleochroic colors are green, orange, and purple-red. However, the striking color change doesn’t arise from the gem’s pleochroism, but rather from the mineral’s unusual light-absorbing properties.
Because of its scarcity, especially in larger sizes, it is a relatively expensive member of the chrysoberyl family. It shares its status as a June birthstone with cultured pearl and moonstone.
It was first discovered in the 1830s in Russia’s Ural Mountains and named after the future Czar of Russia, Alexander II. Red and green were Imperial Russia’s national colors, increasing demand for the gemstone and eventually depleting the supply found in the Urals.