Jasper n. : An opaque, impure variety of quartz, of red, yellow, and other dull colors, breaking with a smooth surface. It admits of a high polish, and is used for vases, seals, snuff boxes, etc. When the colors are in stripes or bands, it is called striped / banded jasper. The Egyptian pebble is a brownish yellow jasper.

Example:
How to advise Jasper on the essential elements of a contract in relation to the scenario?

Taxonomy
Jasper, Leopard Skin Jasper, Orbicular jasper, stone, free encyclopedia, rock, Search, Iaspis, mineral, seals, Greek, Agate, Amethyst, depositional, diffusion, appearance, Aquamarine, Ametrine.

Defination from the web:
Jasper is an opaque rock of virtually any color stemming from the mineral content of the original sediments or ash. ... Hydro-thermal action is generally thought to be required in the formation of jasper. ... The classification and naming of jasper presents an enormous challenge. ...