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The Briolette of India is a colorless diamond (weighing 90.38 carats (18.076 g)) that was found in India. It is cut in a briolette shape, and is a D-coloured (colourless) type IIa diamond . [ 1 ] Its history was thought to date from the 12th century, when it was first acquired by Eleanor of Aquitaine , the Queen consort of King Louis VII of ...
A briolette is a style of gemstone cut. It is an elongated, mostly symmetrical along the main axel, pear shape covered with angular facets usually with a pointed end and no girdle . [ 1 ] It is often drilled to hang as a bead.
Lozenge; diamond shape, 1 ⁄ 2 by 1 ⁄ 2 by 1 ⁄ 8 inch (10 mm × 10 mm × 3 mm) Fermière; cut lengthwise and then sliced to desired thickness 1 ⁄ 8 – 1 ⁄ 2 inch (3–10 mm) Rondelle; cylindrical vegetables cut to discs of desired thickness 1 ⁄ 8 – 1 ⁄ 2 inch (3–10 mm)
(11) Diamond (4.5 pt, 1.5875 mm). Fonts originally consisted of a set of moveable type letterpunches purchased from a type foundry. As early as 1600, the sizes of these types—their "bodies" [1] —acquired traditional names in English, French, German, and Dutch, usually from their principal early uses. [2]
The Marie Louise Diadem is a diamond and turquoise ... cut in oval and briolette ... along with 1,002 brilliant-cut and 264 rose-cut diamonds of various sizes ...
Diamond's RI is responsible for its brilliance—the amount of incident light reflected back to the viewer. Also important is a diamond's dispersive power—the ability of the material to split white light into its component spectral colors—which is also relatively high, at 0.044 (as measured from the B-G interval). The flashes of spectral ...
The diamond cut planning stage is a complex process that requires the cutter to work with unique rough stones. Very often, the location of the inclusions in a rough stone will determine the type of shape to which a diamond may be cut.
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 ...