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Emerald Origin Date Uncut size Cut size Location Ref Chipembele emerald Zambia 2021 7,525 carats (1,505.0 g) Israel Diamond Exchange, Eshed – Gemstar [14] [15] [16] Inkalamu emerald Zambia 2018 5,655 carats (1,131.0 g) Private Collector [17] Insofu emerald Zambia 2010 6,255 carats (1,251.0 g) Jewellery brand [18] Bahia Emerald: Brazil 2001
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. For economic reasons, most diamonds are cut to retain weight instead of maximizing brilliance. [2]
Cut emeralds. Emeralds, like all colored gemstones, are graded using four basic parameters known as "the four Cs": color, clarity, cut and carat weight. Normally, in grading colored gemstones, color is by far the most important criterion. However, in the grading of emeralds, clarity is considered a close second.
This page was last edited on 8 November 2021, at 18:47 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
Generally, a prong setting is formed of a number of short, thin strips of metal, called prongs, which are arranged in a shape and size to hold the given stone, and are fixed at the base. Then a burr of the proper size is used to cut what is known as a "bearing", which is a notch that corresponds to the angles of the stone. The burr most often ...
Instead of a culet, step-cut stones have a keel running the length of the pavilion terminus. Like other fancy shaped diamonds, emerald cut diamonds can come in a variety of length to width ratios. The most popular and classic outline of emerald cut diamonds are close a value of 1.5. The Asscher cut, a square modified emerald cut, is also popular.
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