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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 ...
Each grid has the clarity options on the horizontal line and the color options on the vertical line. In order to calculate the price of a diamond according to the Rapaport Price List, you need to know the size, color and clarity of the diamond. The price listed based on this information is in hundreds of dollars per carat. [3]
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.
Lab-grown diamonds of various colors grown by the high-pressure-and-temperature technique. A synthetic diamond or laboratory-grown diamond (LGD), also called a lab-grown diamond, [1] laboratory-created, man-made, artisan-created, artificial, synthetic, or cultured diamond, is a diamond that is produced in a controlled technological process (in contrast to naturally formed diamond, which is ...
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 ...
The 180,000-carat Bahia Emerald was smuggled out of the South American country by two residents in 2001. A legal battle over the stone ensued in 2014 as about 10 individuals, corporations and the ...
Detailed view of the recreated great Golden Fleece of king Louis XV of France. Below the 107 carats (21.4 g) spinel Côte de Bretagne hangs the French Blue diamond and the fleece itself, set with hundreds of yellow diamond replicas. The Tavernier Blue was the precursor diamond to the Blue Diamond of the French Crown (aka the French Blue).
Spicy Chick-Fil-A Chick-n-Strips. For those who crave a kick of heat, Chick-fil-A’s Spicy Chick-n-Strips were a standout hit. Chicken breast strips seasoned with a spicy blend of peppers quickly ...