|
|
name:
|
Peridot
|
| gemstone variety:
|
Peridote
|
| trade name 1:
|
Peridot
|
| trade name 2:
|
Chrysolite
|
| trade name 3:
|
Olivine
|
| basic colour:
|
green
|
|
|
Colour :
|
olive-green to lime-green
|
Quality :
|
the beauty and intensity of the green colour. Facetted
Peridots should have no visible inclusions and balanced
proportion in the cutting
|
History :
|
Peridot has been known since the times of ancient
Egypt from the island of Zerbeget in the Red Sea. The new
deposit of Pakistan that produces very vivid green colours
was first discovered in 1994.
|
Curiosities / Saga :
|
|
Countrys of Origin :
|
Arizona USA, Myanmar (Burma), Sri Lanka, China, and in
the Pakistan part of Kashmir in the Nanga Parbat region (far
west of the Himalayan Mountains)
|
Birthstone :
|
August - Peridot
|
Hardness :
|
6.5 - 7
|
Treatment :
|
none
|
Size :
|
commonly between 0.50 and 10.00 carats
|
Specific gravity :
|
3.34 - 3.37
|
Chemical Composition Formula :
|
(Mg,Fe)2 SiO4
|
Chemical Composition Name :
|
magnesium- iron- silicate
|
Crystal system :
|
rhombic
|
Light refraction :
|
1.659 - 1.690
|
Double refraction :
|
0.036 - 0.038
|
|
|
