ALEXANDRITE 0.30 Cts NATURAL SRI LANKA LOOSE GEMSTONE 21369

100% Natural – Not treated in any way.
Beautiful Center-stone for an engagement Ring.
Gem with High Lustre and Good Clarity.
Large Sizes are Extremely Rare!
A Gem of Lasting Beauty.
Alexandrite – One of the most Fascinating gems, Which has the ability to change color from Green to Red. Alexandrites are among the rarest of gems

Refractive Index: 1.741 – 1.760
Hardness: 8.50
Chemical Comp: BeAl2O4
Density: 3.73
Crystal Group: Orthorhombic

Alexandrite is named after Russian Tsar Alexander II (1818-1881), the very first Crystals discovered in April 1834 near the Tokovaya River in the Urals. Alexandrite is a fascinating gem since it shows both red and green.

Beautiful alexandrite in top quality, however, is very rare and hardly used in jewellery due to the high price. Its main feature is its ability to change its color. Green in daylight, to a soft shade of red, in incandescent light which makes it a highly prized gem. It is basically a Chrysoberyl, and chromium accounts for the spectacular colour change.