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EGL, E.G.L., European Gemological Laboratory | European Gemological Laboratory claims to be an international independent leader in diamond grading and training for all diamond business solutions.
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Eight Cut | Also called "single cut". Diamonds, usually small, with only 18 facets instead of the full 58 on a brilliant cut.
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Eights | The first eight facets cut on each of the crown and pavilion of a diamond, placed or ground by a "blocker".
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Element Six | The name of the former De Beers Industrial Diamonds group of companies. "Element Six" is a reference to carbon's atomic number 6.
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Emerald Cut | A square of rectangular shape with cut (mitred) corners, forming an eight sided figure (octagon), and step cut; derives it name because it is the commonest shape of cut for emeralds. Looks glassy, and modern facetting styles such as radiant cut produces more brilliant and attractive stones.
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Engagement | De Beers advertising over the last century has established a "tradition" that a woman should receive a diamond ring as an engagement symbol.
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Enhance, Enhanced, Enhancement | To improve the colour or clarity of a diamond in some manner. See colour enhancement or clarity enhancement.
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Eppler Cut | Eppler devised the specifications for this "Practical Fine Cut" in 1939.
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Eternity | De Beers have extended the diamond engagement ring "tradition", by brainwashing us to believe that a diamond eternity ring should also be a tradition on the first wedding anniversary, or the birth of a first child.
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Eureka | The name of a famous diamond.
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European Cut | A European version of "ideal" cut used and preferred in Europe following the research of Tolkowsky and others.
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Extra Facet | An additional facet polished onto a diamond, usually to remove a "natural" or small surface blemish.
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Exceptional White | The name of the top colour in the CIBJO colour grading scales, equating to D and E colours in the GIA scale.
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Eye Clean | No visible inclusions with the naked eye, therefore at least SI in clarity.
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There are currently over 600 entries in this table.
Over 90 of them have page links to a page on this site. Eventually, we intend to add a more complete description for most entries, each on its own page.
Please watch this space!
