Difference between revisions of "Jasper"
From The Gemology Project
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==Scenic jasper== | ==Scenic jasper== | ||
− | [[Image:Scenic jasper.jpg|left|thumb|200px| | + | [[Image:Scenic jasper.jpg|left|thumb|200px|Picture jasper, silhouette of a young woman<br />Image courtesy of Topsieraden.nl]] |
Picture, or scenic, or landscape jasper and agate gets its name from the pictures of scenes, animals or objects formed by the colorful patterns from other minerals present. | Picture, or scenic, or landscape jasper and agate gets its name from the pictures of scenes, animals or objects formed by the colorful patterns from other minerals present. |
Revision as of 04:56, 6 December 2008
Jasper | |
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Chemical composition | SiO2 Silicon dioxide |
Crystal system | Trigonal |
Habit | Aggregate, massive |
Fracture | Conchoidal |
Hardness | 6.5-7 |
Refractive index | 1.53-1.54 |
Specific gravity | 2.58-2.64 |
Lustre | Vitreous |
Scenic jasper
Picture, or scenic, or landscape jasper and agate gets its name from the pictures of scenes, animals or objects formed by the colorful patterns from other minerals present.