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  2. Diamond simulant - Wikipedia

    en.wikipedia.org/wiki/Diamond_simulant

    The first crystalline artificial diamond simulants were synthetic white sapphire (Al 2 O 3, pure corundum) and spinel (MgO·Al 2 O 3, pure magnesium aluminium oxide). Both have been synthesized in large quantities since the first decade of the 20th century via the Verneuil or flame-fusion process, although spinel was not in wide use until the ...

  3. Sample size determination - Wikipedia

    en.wikipedia.org/wiki/Sample_size_determination

    The table shown on the right can be used in a two-sample t-test to estimate the sample sizes of an experimental group and a control group that are of equal size, that is, the total number of individuals in the trial is twice that of the number given, and the desired significance level is 0.05. [4]

  4. Spinel - Wikipedia

    en.wikipedia.org/wiki/Spinel

    Polyhedral representation of spinel MgAl 2 O 4. Spinel (/ s p ɪ ˈ n ɛ l, ˈ s p ɪ n əl / [7]) is the magnesium/aluminium member of the larger spinel group of minerals. It has the formula MgAl 2 O 4 in the cubic crystal system. Its name comes from the Latin word spinella, a diminutive form of spine, in reference to its pointed crystals. [5]

  5. Diamonds as an investment - Wikipedia

    en.wikipedia.org/wiki/Diamonds_as_an_investment

    There are considerable price shifts near the edges of the size bands, so a 0.49 carats (98 mg) stone may list at $5,500 per carat = $2,695, while a 0.50 carats (100 mg) stone of similar quality lists at $7,500 per carat = $3,750. Stones near the top of a size band (or rarer fancy coloured varieties) tend to be uprated slightly. Some of the ...

  6. Diamond (gemstone) - Wikipedia

    en.wikipedia.org/wiki/Diamond_(gemstone)

    Since the per carat price of diamond shifts around key milestones (such as 1.00 carat (200 mg)), many one-carat diamonds are the result of compromising cut for carat. Some jewelry experts advise consumers to buy a 0.99-carat (198 mg) diamond for its better price or buy a 1.10-carat (220 mg) diamond for its better cut, avoiding a 1.00-carat (200 ...

  7. 2 Police Agencies Failed Mom Who Was Forced to Swallow ...

    www.aol.com/2-police-agencies-failed-mom...

    Authorities failed a mother of five in England whose estranged husband abused her for years before murdering her in 2023, an inquest has found. Lucy-Anne Rushton, 30, of Andover, Hampshire, was ...

  8. 10 Members of the Same Family Killed After Private Jet ... - AOL

    www.aol.com/lifestyle/10-members-same-family...

    Ten members of the same family have been killed after a private jet crashed minutes after taking off in southern Brazil on Sunday, Dec. 22. A statement released on the LinkedIn page of business ...

  9. Wikipedia : WikiProject Gemology and Jewelry/Gemstones

    en.wikipedia.org/wiki/Wikipedia:WikiProject...

    The following values may be used for the importance parameter: Top (adds articles to Category:Top-importance Gemology and Jewelry articles); High (adds articles to Category:High-importance Gemology and Jewelry articles)

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