fire-opal
Definition
Noun: - A type of opal that displays a bright, fiery play of color, typically with a yellow, orange, or red background. It is a gemstone known for its vivid, iridescent flashes of light.
Usage Examples
- (The gemstone displayed bright, fiery colors.)
- (The opal's characteristic yellow, orange, or red tones are prized.)
Advanced Usage
- "fire-opal" in geology: Refers specifically to a variety of opal (SiO₂·nH₂O) with a transparent to translucent body color that ranges from yellow to red, often exhibiting a "play-of-color" effect caused by light diffraction.
- The volcanic region is known for producing high-quality fire-opals. (The gemstones are formed in volcanic rock.)
Variants and Related Words
Opal (n): a broader category of hydrated amorphous silica gemstones, which can be colorless, white, or black, not necessarily with a fiery appearance.
- She collects various opals, including fire-opals and black opals. (Different types of opal gemstones.)
Fire (adj): in "fire-opal," it describes the gem's bright, flame-like coloration, distinguishing it from other opal varieties.
Synonyms
- Mexican opal: a common trade name for fire-opal, as many are sourced from Mexico.
- Cherry opal: a less common synonym referring to fire-opals with a deep red hue.
Related Idioms
- "To have a fire-opal heart": a poetic expression meaning to possess a passionate or vibrant inner nature (not a standard idiom, but a creative usage).
- Her spirit burned bright, like a fire-opal heart. (Her personality was intense and colorful.)