jasper

/'dʤæspə/

Thân thiện

A polished red jasper sits on a jeweler's velvet display pad.

Definition

1. Noun:
   • An opaque form of quartz: A type of mineral, a variety of chalcedony (cryptocrystalline quartz), that is not transparent or translucent.
   • Characterized by its color: It is typically found in shades of red, yellow, brown, or dark green, often with streaks or patterns.
   • Use: Historically and presently valued for ornamentation, carvings, and as a gemstone in jewelry.

Examples of Usage

• Noun:
  • The artisan carved an intricate seal from a piece of red jasper.
  • Her necklace featured a polished green jasper pendant.
  • Jasper is often used for decorative inlays in furniture and boxes.

Advanced Usage

• "Jasper" in geology: Refers specifically to an opaque, impure variety of silica, usually containing significant amounts of other minerals like iron oxides which give it its color.
• Biblical and historical reference: Jasper is mentioned as a precious stone in various historical texts, including the Bible, often symbolizing beauty and durability.

Variants and Related Words

• Jasperware (n): A type of pottery, famously developed by Josiah Wedgwood, characterized by matte, unglazed surfaces in colors like pale blue, often with white classical-style reliefs. (Note: This is a compound word/related term, not a variant of the mineral itself).
• Jaspilite (n): A banded iron formation rock that contains layers of jasper.

Synonyms

• Chalcedony (n): The broader mineral group to which jasper belongs, though chalcedony can be translucent.
• Ornamental stone (n): A general term for stones used in decoration, which includes jasper.

Related Phrases

• Blood jasper: A common name for a dark red variety of jasper.
• Picture jasper: A variety of jasper that contains scenic, landscape-like patterns.

Học thuật

Noun

1. an opaque form of quartz; red or yellow or brown or dark green in color; used for ornamentation or as a gemstone