jasper

An opaque cryptocrystalline variety of quartz that may be red, yellow, or brown.

Same as jasperize.

Among the ancients, a bright-colored chalcedony (not, however, including carnelian), translucent and varying in color, green being apparently most common. It was highly esteemed as a precious stone.

In modern usage, a closely compact crypto-crystalline variety of quartz, opaque or nearly so, and colored red, yellow, or brown, or less often green.

An earthenware made of pounded spar.

Same as jasper-ware.

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 jasper or banded jasper. The Egyptian pebble is a brownish yellow jasper.

a yellow variety of opal resembling jasper.

a delicate kind of earthenware invented by Josiah Wedgwood. It is usually white, but is capable of receiving color.

Any bright-coloured kind of chalcedony apart from cornelian.