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  2. Diamond - Wikipedia

    en.wikipedia.org/wiki/Diamond

    Yellow diamonds of high color saturation or a different color, such as pink or blue, are called fancy colored diamonds and fall under a different grading scale. [ 34 ] In 2008, the Wittelsbach Diamond , a 35.56-carat (7.112 g) blue diamond once belonging to the King of Spain, fetched over US$24 million at a Christie's auction. [ 58 ]

  3. Diamond color - Wikipedia

    en.wikipedia.org/wiki/Diamond_color

    When the color is rare, the more intensely colored a diamond is, the more valuable it becomes. Another factor that affects the value of fancy-colored diamonds is fashion trends. For example, pink diamonds fetched higher prices after Jennifer Lopez received a pink diamond engagement ring. [16]

  4. Pink diamond - Wikipedia

    en.wikipedia.org/wiki/Pink_diamond

    As with the color in all fancy color diamonds, the color in pink diamonds is assessed according to its hue, saturation, and tone. [10] The hue refers to the primary and secondary colors, the saturation refers to the intensity of color, and the tone refers to the darkness of the color. Pink diamonds can occur in hues ranging from brown-pink to ...

  5. List of diamonds - Wikipedia

    en.wikipedia.org/wiki/List_of_diamonds

    Discovered in 2015, it is the 5th largest diamond ever discovered at the Crater of Diamonds State Park, Arkansas Identified as a Type IIa crystal, the 8.52 carat diamond was cut and polished by Mike Botha into a custom-designed 4.605 carat Triolette shape during a week long event in North Little Rock and was graded a D IF, 0 Polish & 0 Symmetry ...

  6. Gemstone - Wikipedia

    en.wikipedia.org/wiki/Gemstone

    For example, diamonds are made of carbon (C) and rubies of aluminium oxide (Al 2 O 3). Many gems are crystals which are classified by their crystal system such as cubic or trigonal or monoclinic. Another term used is habit, the form the gem is usually found in. [12] For example, diamonds, which have a cubic crystal system, are often found as ...

  7. List of minerals - Wikipedia

    en.wikipedia.org/wiki/List_of_minerals

    Amethyst crystals – a purple quartz Apophyllite crystals sitting right beside a cluster of peachy bowtie stilbite Aquamarine variety of beryl with tourmaline on orthoclase Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico Aurichalcite needles spraying out within a protected pocket lined by bladed calcite crystals Austinite from the Ojuela Mine, Mapimí, Durango, Mexico Ametrine ...

  8. Diamond industry ‘in trouble’ as lab-grown gemstones tank ...

    www.aol.com/news/diamond-industry-trouble-lab...

    Lab-grown diamond sales surged from just 2% of the global diamond jewelry market in 2017 to 18.4% in 2023, according to data provided by Zimnisky. Additionally, the case for buying diamonds as an ...

  9. Material properties of diamond - Wikipedia

    en.wikipedia.org/wiki/Material_properties_of_diamond

    Pure (type IIa) diamond can be colored pink, red, or, brown owing to structural anomalies arising through plastic deformation during crystal growth; [20] these diamonds are rare (1.8% of gem diamonds), but constitute a large percentage of Australian diamonds. Type IIb diamonds, which account for ~0.1% of gem diamonds, are usually a steely blue ...