Poppy Jasper

A particularly attractive jasper with orbicular (spherical) inclusions resembling poppy flowers.

There are just a few deposits of orbicular jasper. Best known are socalled ocean jasper from Madagascar and poppy jasper, found mostly around the town of Morgan Hill, Santa Clara County, California.

mohnjaspis poppy jasper morgan hill

Around Morgan Hill four locations are known, all of them on private property or protected land and none of them is actively mined.

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Gemmological Properties of Poppy Jasper

Formula:
SiO2
Crystal system:
trigonal
Mohs hardness:
6.5-7
Specific gravity:
2.58-2.91
Refractive index:
birefringent 1.543-1.554
Max. Birefringence:
0.009
Dispersion:
none
Pleochroism:
none
Luminiscence:
inert
Lustre:
waxy
Cleavage:
none
Fracture:
conchoidal,splintery