A diamond is a valuable gemstone that's often used to make expensive jewelry. You might admire your friend's diamond earrings, but secretly wonder if they're real.

An engagement ring is typically set with one or more diamonds. Diamonds used for jewelry are cut and polished, and they're evaluated for quality and price by weight, or carat, as well as by their cut, clarity, and color. Another kind of diamond is the geometrical shape, which is also seen on playing cards called diamonds, and echoed in the shape of a baseball field, also known as a diamond.

Definitions of diamond
  1. noun
    very hard native crystalline carbon valued as a gem
    synonyms: adamant
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    black diamond, carbonado
    an inferior dark diamond used in industry for drilling and polishing
    type of:
    C, atomic number 6, carbon
    an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compounds
    transparent gem
    a gemstone having the property of transmitting light without serious diffusion
  2. noun
    a transparent piece of diamond that has been cut and polished and is valued as a precious gem
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    ice, sparkler
    type of:
    gem, jewel, precious stone
    a precious or semiprecious stone incorporated into a piece of jewelry
  3. noun
    a parallelogram with four equal sides; an oblique-angled equilateral parallelogram
    synonyms: lozenge, rhomb, rhombus
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    type of:
    a quadrilateral whose opposite sides are both parallel and equal in length
  4. noun
    a playing card in the minor suit that has one or more red rhombuses on it
    “he led a small diamond
    diamonds were trumps”
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    type of:
    playing card
    one of a pack of cards that are used to play card games
  5. noun
    the area of a baseball field that is enclosed by 3 bases and home plate
    synonyms: baseball diamond, infield
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    the area of a baseball playing field beyond the lines connecting the bases
    type of:
    parcel, parcel of land, piece of ground, piece of land, tract
    an extended area of land
  6. noun
    the baseball playing field
    synonyms: ball field, baseball field
    see moresee less
    type of:
    athletic field, field, playing area, playing field
    a piece of land prepared for playing a game
Word Family

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