diamond
B1Formal, Informal, Technical (depending on context)
Definition
Meaning
A precious, extremely hard, clear stone made of pure carbon, typically used in jewellery; also a shape with four equal straight sides arranged as two acute and two obtuse angles.
Can refer to anything of exceptional quality, durability, or brilliance; a sector of a baseball field; a suit in a deck of cards; or a type of anniversary (60th).
Linguistics
Semantic Notes
The core meanings ('gemstone' and 'shape') are primary. Metaphorical uses ('a diamond of a person') are poetic/figurative. In baseball/softball and card games, it's a technical term.
Dialectal Variation
British vs American Usage
Differences
Spelling is identical. In sports, 'diamond' is used in UK for baseball/softball and rounders pitches. In US, 'diamond' is strongly associated with baseball.
Connotations
Similar high-value, luxury, and permanence connotations in both varieties.
Frequency
Similar high frequency in both varieties for core meanings.
Vocabulary
Collocations
Grammar
Valency Patterns
diamond of [quality] (e.g., a diamond of exceptional clarity)diamond in the [location] (e.g., a diamond in the rough)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “diamond in the rough”
- “diamond geezer (UK informal)”
- “a girl's best friend”
Usage
Context Usage
Business
Refers to the gemstone trade, investment commodity, or luxury goods sector (e.g., 'De Beers dominates the diamond market').
Academic
Used in geology, chemistry (carbon allotropes), and materials science (e.g., 'Diamond has the highest thermal conductivity of any natural material').
Everyday
Most commonly refers to jewellery or the geometric shape (e.g., 'She got a diamond engagement ring', 'Cut the paper into a diamond').
Technical
In industry: cutting tools (diamond-tipped blades). In sports: baseball/softball field layout. In cards: one of the four suits.
Examples
By Part of Speech
verb
British English
- The craftsman will diamond the glass to create a precise cut.
American English
- They decided to diamond the watch crystal for added scratch resistance.
adverb
British English
- The crystal shone diamond bright under the lights. (poetic/archaic)
American English
- Her eyes sparkled diamond-like in the sun. (quasi-adverbial)
adjective
British English
- They celebrated their diamond wedding anniversary.
American English
- He was given a diamond-class upgrade on his flight.
Examples
By CEFR Level
- Her ring has a small diamond.
- I can draw a diamond shape.
- Diamonds are very expensive and beautiful.
- In baseball, the players run around the diamond.
- The diamond's clarity and carat weight determine its market value.
- Despite his rough exterior, he's a real diamond in the rough.
- The geologist identified the carbonado, a rare polycrystalline diamond aggregate.
- The deal was diamond-cut, leaving no room for ambiguity or future renegotiation.
Learning
Memory Aids
Mnemonic
Imagine the word 'DIA' meaning 'through' (like diameter) and 'MOND' sounding like 'world' (monde in French). A diamond shines light *through* the *world* of gemstones.
Conceptual Metaphor
VALUE IS HARDNESS/CLARITY (e.g., 'a diamond mind', 'diamond-hard resolve'); PERFECTION IS A FLAWLESS GEM (e.g., 'a diamond of a performance').
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating 'brilliant' (Russian 'бриллиант') directly as 'brilliant' in English for the gemstone; the standard English term is 'diamond'. 'Brilliant' in English refers to a specific cut or means 'very intelligent'.
- The shape 'diamond' is 'ромб' in Russian, not to be confused with 'алмаз' (the gem/mineral).
Common Mistakes
- Misspelling as 'daimond' or 'diamon'.
- Using 'a diamond' as an uncountable noun (e.g., 'The ring is made of diamond' – better: '...made of diamonds' or '...is diamond').
- Confusing 'diamond' (shape) with 'rhombus' (more mathematical term).
Practice
Quiz
In which context does 'diamond' NOT refer to a shape?
FAQ
Frequently Asked Questions
Yes, but it's specialised. It means to adorn with diamonds or, in industry, to coat or cut with a diamond tool (e.g., 'diamond-tipped drill').
In geometry, a rhombus is a quadrilateral with all sides equal. A diamond is typically how a rhombus is depicted, often oriented with a horizontal long diagonal (like a kite shape). In everyday language, 'diamond' is the common term.
The tradition of associating anniversaries with materials began in the Victorian era. Diamond represents unparalleled strength, durability, and value, symbolising a marriage that has lasted 60 years.
Primarily countable (a diamond, three diamonds). It can be uncountable when referring to the substance as a material (e.g., 'The blade is edged with industrial diamond').
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