Alexandrite
This
is a variety of chrysoberyl, like cat's eye, distinguished by a play.
of colours which has earned it the name of "chameleon stone".
Its natural colour ranges from dark to pale green, but in the light
may appear anything from red to yellow, to orange, to mauve even,
depending on how the rays strike it.
It is a very attractive stone, but rare and therefore very costly,
and only the top quality is worth buying. It is, however, an excellent
investment because it is much prized by jewelers and collectors.
Pure alexandrite is always faceted, or cut en cabochon if flaws are
present (in this case be careful not to confuse it with other "chameleon"
chrysoberyls or labradorite). Its value is on a par with the four
precious stones and when well set is a match for even the finest
diamond. The best specimens come from Russia, but it is also found in
Ceylon, Burma, Brazil, Madagascar and the USA.
|
Name |
|
|
|
|
|
|
|
|
|
| Alexandrite |
8.5 |
3.70-3.73 |
Orthorhombic
|
Imperfect |
1.744-1.755 |
0.011 |
0.015 |
v Weak |
None |
|
