• Cape Diamond
    Cape Diamond
  • WordNet 3.6
    • n diamond the baseball playing field
    • n diamond the area of a baseball field that is enclosed by 3 bases and home plate
    • n diamond a playing card in the minor suit that has one or more red rhombuses on it "he led a small diamond","diamonds were trumps"
    • n diamond a transparent piece of diamond that has been cut and polished and is valued as a precious gem
    • n diamond a parallelogram with four equal sides; an oblique-angled equilateral parallelogram
    • n diamond very hard native crystalline carbon valued as a gem
    • ***

Additional illustrations & photos:

A Rescue on the Diamond Shoals A Rescue on the Diamond Shoals
Diamonds Diamonds
Rose-cut Diamond Rose-cut Diamond
Kimberley Diamond-mine Kimberley Diamond-mine

Webster's Revised Unabridged Dictionary
  • Interesting fact: Diamonds were first discovered in the riverbeds of the Golconda region of India over 4,000 years ago.
    • Diamond A geometrical figure, consisting of four equal straight lines, and having two of the interior angles acute and two obtuse; a rhombus; a lozenge.
    • Diamond (Arch) A pointed projection, like a four-sided pyramid, used for ornament in lines or groups.
    • Diamond A precious stone or gem excelling in brilliancy and beautiful play of prismatic colors, and remarkable for extreme hardness.
    • Diamond One of a suit of playing cards, stamped with the figure of a diamond.
    • a Diamond Resembling a diamond; made of, or abounding in, diamonds; as, a diamond chain; a diamond field.
    • Diamond (Baseball) The infield; the square space, 90 feet on a side, having the bases at its angles.
    • Diamond (Print) The smallest kind of type in English printing, except that called brilliant, which is seldom seen.
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: Australia has had stamps that actually look like gems. In 1995 and 1996 they used a special technology to make the stamps look like diamonds and opals.
    • n diamond Adamant; steel, or some imaginary substance of extreme hardness or impenetrability.
    • n diamond A precious stone, distinguished from all others by being combustible and by its extreme hardness, as well as by its superior refractive and dispersive power. It consists of pure or nearly pure carbon, leaving only a very small quantity of ash when burned. Its specific gravity is about 3½ its crystalline form is the isometric, and it cleaves readily in planes parallel to the faces of the regular octahedron. Natural crystals are found in a great variety of forms belonging to the isometric system. The crystalline planes of the diamond have this peculiarity, that they are frequently more or less convex, instead of being flat, as those of crystals usually are. The range of color of the diamond is extensive, but hues of light yellow, or straw-color, and brown are of most common occurrence. Diamonds of a decided color, such as green, blue, or even red, are found, but they are extremely rare; only one deep-red diamond is known. A diamond is of the first water when it is without flaw or tint of any kind. The value of the gem increases in an increasing ratio with its weight up to a moderate size; beyond that there is no fixed value. A first-water diamond of one carat being considered worth $100, one of two carats would be held at $300, and one of ten at $11,000. The most desirable form in which the diamond may be cut is called the brilliant. (See cuts under brilliant.) Diamonds formerly came chiefly from India, and later from Brazil; the present principal source of supply is southern Africa, where they are found associated with a peculiar rock of unequivocal volcanic origin. In all other diamantiferous regions diamonds have been found only in the surface detrital material (gravel and sand), or else, rarely, in rock of fragmental origin. See bort.
    • n diamond A geometrical figure bounded by four equal straight lines forming two acute and two obtuse angles; a rhomb; a lozenge; specifically, such a figure printed in red on a playing-card.
    • n diamond A playing-card stamped with one or more red lozenge-shaped figures.
    • n diamond A tool armed with a diamond, used for cutting glass. Diamonds so used are uncut, and they are so mounted as to act upon the glass, not by an angle, but by a curvilinear edge of the crystal.
    • n diamond In base-ball, the square space inclosed within the four bases. See base-ball.
    • n diamond In heraldry, the tincture black in blazoning by means of precious stones. See blazon, n.
    • n diamond The smallest size of printing-type in common use; a size smaller than pearl. Brilliant, very rarely used, is the only regular size below it.
    • n diamond This line is printed in diamond.
    • n diamond Mineral coal, as consisting, like diamonds, of carbon.
    • diamond Resembling a diamond; consisting of diamonds; set with a diamond or diamonds: as, a diamond luster; a diamond necklace; a diamond ring.
    • diamond Lozenge-shaped; rhombic: as, diamond window-panes.
    • diamond Having rhomboid figures or markings: as, the diamond rattlesnake.
    • diamond To set or decorate with diamonds.
    • ***
Chambers's Twentieth Century Dictionary
  • Interesting fact: The largest diamond that was ever found was 3106 carats.
    • n Diamond dī′a-mond the most valuable of all gems, and the hardest of all substances: a four-sided figure with two obtuse and two acute angles: one of the four suits of cards: one of the smallest kinds of English printing type
    • adj Diamond resembling diamonds: made of diamonds: marked with diamonds: lozenge-shaped, rhombic
    • ***


  • Mary Case
    Mary Case
    “No pressure, no diamonds.”
  • Ralph Waldo Emerson
    “The hues of the opal, the light of the diamond, are not to be seen if the eye is too near.”
  • Chinese Proverb
    Chinese Proverb
    “Better a diamond with a flaw than a pebble without one.”
  • Zsa Zsa Gabor
    Zsa Zsa Gabor
    “I never hate a man enough to give him his diamonds back.”
  • William R. Alger
    William R. Alger
    “Proverbs are mental gems gathered in the diamond fields of the mind.”
  • (Decimus Junius Juvenalis) Juvenal
    (Decimus Junius Juvenalis) Juvenal
    “Many individuals have, like uncut diamonds, shining qualities beneath a rough exterior.”


Diamond in the rough - A diamond in the rough is someone or something that has great potential, but isn't not refined and polished.
Rough diamond - A rough diamond is a person who might be a bit rude but who is good underneath it all.


Webster's Revised Unabridged Dictionary
OE. diamaund, diamaunt, F. diamant, corrupted, fr. L. adamas, the hardest iron, steel, diamond, Gr. . Perh. the corruption is due to the influence of Gr. transparent. See Adamant Tame


In literature:

There is little likelihood of mistaking a bluish diamond for any other stone on account of the "fire" and the adamantine luster of the diamond.
"A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public" by Frank Bertram Wade
So you took your diamonds away the first time, last week.
"The Red Triangle" by Arthur Morrison
Every precaution was taken; yet the great diamond crucifix of Louis XI.
"The Maids of Paradise" by Robert W. (Robert William) Chambers
A magnificent diamond, belonging to the Emperor of Russia, bought by the Empress Catherine, weighs over one hundred and ninety-three carats.
"Harper's Young People, January 27, 1880" by Various
Opening it, he dropped out on the table six diamonds.
"The Motor Boat Club and The Wireless" by H. Irving Hancock
This afternoon it was game all, and Armitage overcalled my diamond opener with three spades.
"Competition" by James Causey
But horse sense made me pass it by and stay on my own home diamond.
"The Gorgeous Girl" by Nalbro Bartley
We have in our diamond the element carbon, but diamond-carbon is a hard substance, and not in a finely-divided state.
"The Story of a Tinder-box" by Charles Meymott Tidy
It is a diamond, valued at fifteen thousand pounds.
"The Strand Magazine, Volume V, Issue 26, February 1893" by Various
I have a request from a lady up town to send her a couple of diamonds rings to select from.
"Mark Mason's Victory" by Horatio Alger
Her shoes were red silk, worked with gold and diamonds.
"Gossip in the First Decade of Victoria's Reign" by John Ashton
He knew only that like it there was no other diamond in the world, and that the thing was real.
"Astounding Stories of Super-Science, December 1930" by Various
She just came in from the theatre, and she was wearing the diamonds.
"Ashton-Kirk, Criminologist" by John T. McIntyre
Her hair looked grander than usual, because of something she had never had in it before, and that was a beautiful diamond twisty-twirly thing.
"The Girls and I" by Mary Louisa Stewart Molesworth
Pretorius Brothers' diamond-importing house in Amsterdam, Holland.
"The Adventures of the Eleven Cuff-Buttons" by James Francis Thierry
But you will, when I tell you I've found the Diamond Thunderbolt!
"Astounding Stories, July, 1931" by Various
He certainly had them guessing, and in vain did they try to get the ball out of the diamond.
"Jack Winters' Baseball Team" by Mark Overton
There is no diamond in the world, however precious, that I should prefer to your eyes when you open them.
"Timar's Two Worlds" by Mór Jókai
By the diamond drill, holes can be bored in any direction, from vertically downward to vertically upward.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 3" by Various
Ah, that unfortunate loss of the diamond, what have we not suffered by it!
"The Mysteries of Paris, Volume 2 of 6" by Eugène Sue

In poetry:

Twinkle, twinkle, little star,
How I wonder what you are,
Up above the world so high,
Like a diamond in the sky.
"The Star" by Jane Taylor
With diamonds and perfumes
In ruff and golden lace,
Tall ladies pass by the looking-glass,
Each sighing at her face.
"The Mirror" by Madison Julius Cawein
I note your infinite reactions - In glassware
And sequin
And puddles
And bits of jet - And here and there a diamond…
"To The Others" by Lola Ridge
Does my sexiness upset you?
Does it come as a surprise
That I dance like I've got diamonds
At the meeting of my thighs?
"Still I Rise" by Maya Angelou
The night-bird sobs below;
The roses blow and bloom;
Thro' the diamond panes the moonlight rains
In the dim unholy room.
"The Mirror" by Madison Julius Cawein
The diamonds shone like broken glass
Upon the midnight street
And all atop the walls were wet
Their white eyes glint & sleek
"Wilderness" by James Douglas Morrison

In news:

Russian miners find 158.2- carat diamond worth $1.5M.
NEW YORK — Big diamonds sparkled during Christie's sale of Magnificent Jewels in New York on Tuesday.
Leading the way was a pear-shaped D color flawless diamond of 50.52 cts.
Wisconsin man reportedly finds 1- carat diamond in friend's well.
A Wisconsin man who found a 1.22- carat diamond in his friend's well reportedly thought the find was just a piece of glass.
More on Neal Schon's engagement to Michaele Salahi: On-stage proposal and 11 carat diamond.
Suresh, owner of Belgrade International Pvt Ltd, said the diamond weighed about 1.5 carats .
Sri Lanka does not mine diamonds but is renowned for other highly treasured gems.
The 43-year-old actress got an eight- carat , emerald-cut diamond just days after.
A 12.27 fancy pink diamond is being offered by MS Rau Antiques in New Orleans.
Courtesy of JostensThe 8- carat Blackhawks' championship ring has 404 diamonds.
But Scarlett Johansson only got a $30,000 3- carat diamond solitaire from Ryan Reynolds, who could probably afford more carats now, after his Green Lantern action hero paycheck.
The 18k white-gold bracelet, the visible parts of the watchcase and the dial are paved with more than 637 baguette diamonds, weighing more than 140 carats .
It takes 45 gemcutters and 2,000 hours of work by master gemsetters to cover this watch in diamonds.
The end mills feature a diamond coating and optimized cutting geometry.

In science:

The fitted curve (dashed line) on the MC data (open diamonds) shows quadratic behavior.
Branching annihilating random walk on random regular graphs
The open squares (diamonds) represent MC data for z = 3 (z = 4).
Branching annihilating random walk on random regular graphs
In section 2 we will consider random tilings of the Aztec diamond of size n, , which can be described using certain non-intersecting paths.
Non-intersecting Paths, Random Tilings and Random Matrices
Let T (An ) denote the set of all domino tilings of the Aztec diamond.
Non-intersecting Paths, Random Tilings and Random Matrices
Colour the Aztec diamond in a checkerboard fashion so that the leftmost square in each row in the top half is white. A horizontal domino is north-going (N) if its leftmost square is white, otherwise it is south-going (S).
Non-intersecting Paths, Random Tilings and Random Matrices
Let τ ∈ T (An ) be a tiling of the Aztec diamond and let v(τ ) denote the number of vertical dominoes in τ .
Non-intersecting Paths, Random Tilings and Random Matrices
Next, we will define another type of paths, the so called zig-zag paths, , in the Aztec diamond.
Non-intersecting Paths, Random Tilings and Random Matrices
We see that the longest increasing subsequence problem can be found in a limit of the Aztec diamond.
Non-intersecting Paths, Random Tilings and Random Matrices
Consider the line y = −x. A domino tiling of the plane induces an infinite zig-zag path around black squares in complete analogy to the zig-zag paths in the Aztec diamond.
Non-intersecting Paths, Random Tilings and Random Matrices
If we consider the zig-zag path through the center of the Aztec diamond, the measure on the zig-zag particle configurations has determinantal correlation functions, (2.8), by theorem 2.2.
Non-intersecting Paths, Random Tilings and Random Matrices
This is consistent with the conjecture, , that in the center of the Aztec diamond a random tiling looks like a tiling of the plane under the Burton-Pemantle measure.
Non-intersecting Paths, Random Tilings and Random Matrices
Helfgott, Edge effects on local statistics in lattice dimers: a study of the Aztec diamond (finite case), math.
Non-intersecting Paths, Random Tilings and Random Matrices
Gessel, Enumerations of tilings of diamonds and hexagons with defects, Electron. J.
Non-intersecting Paths, Random Tilings and Random Matrices
We refer to such a lattice as a diamond lattice.
A Six Vertex Model on a Fishnet
The sum of all such diagrams is thus seen to be equivalent to calculating the partition function for a 6-vertex model on a diamond lattice.
A Six Vertex Model on a Fishnet