chrysoberyl
Definition
- Noun:
- A rare, hard, yellow-green mineral: Chrysoberyl is a naturally occurring mineral composed of beryllium aluminate (BeAl₂O₄). It is known for its exceptional hardness and is typically found in shades of yellow, green, or brown.
- A gemstone: When of suitable quality, chrysoberyl is cut and polished for use in jewelry. Its most famous varieties are the color-changing alexandrite and the chatoyant (cat's eye) chrysoberyl.
Examples of Usage
- Noun:
Advanced Usage
- As a collector's item: High-quality chrysoberyl, especially alexandrite or fine cat's eye stones, is highly prized by mineral and gem collectors.
Variants and Related Words
- Alexandrite (n): A rare and valuable variety of chrysoberyl that changes color under different lighting conditions (e.g., green in daylight, red under incandescent light).
- Cymophane / Cat's Eye Chrysoberyl (n): A variety of chrysoberyl that exhibits chatoyancy, a luminous band of light that moves across the stone like a cat's eye.
Synonyms
- Gemstone: A precious or semi-precious stone, especially when cut and polished for jewelry. (This is a broader category that includes chrysoberyl.)
- Mineral: A naturally occurring inorganic solid with a definite chemical composition and crystalline structure. (This is the scientific category for chrysoberyl.)
Related Phrases
(This word does not commonly form phrasal verbs or idioms.)
Noun
-
a rare hard yellow green mineral consisting of beryllium aluminate in crystal form; used as a gemstone
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