Jasper is an aggregate of microquartz and/or chalcedony and is an impur variety of silica.  It is usually red, yellow, brown, or green in color and rarely blue.  It breaks with a smooth surface and can be highly polished.  

Objects: Jasper Export: JSON - XML - CSV Clay Seals and Sealings

Object U Number Museum Number (UPM Date Reg Number) Museum Number (BM Registration Number) Museum Number (UPM B-number) Description (Catalog Card)
11418 30-12-29 (none) (none) Cylinder seal. Green Jasper. Two men fighting 2 lions, the latter heraldically crossed, and an inscription in 2 lines. Inscription: UrdGIS-BIL-ga-mes dub-sar sumu Urd KA-DI = Ur-Gilgames scribe, son of Ur-KA-DI. HC.1928/9-2.
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Related Terms

Agate - Carnelian - Chrysoprase - Sard