- Premier Rose Diamond
colour_scheme = #FF6600
gem_name = Premier Rose Diamond
weight = 137.02
grams = 27.4
color = Colourless
cut = Pear Shape
cutter = David du Plessis
owner = Robert Mouawad
USD10 million ( 2006)The Premier Rose Diamond (353.9 ct.) was one of the large rare gems produced by Premier Mine, of De Beersin South Africa.
It was mined in March 1978. The diamond was purchased by
Mouw Diamond Cuttingin Johannesburgin partnership with William Goldbergof New York. The diamond was marked for bisection by Rose Mouw, the spouse of Jacob Mouw, the founder of Mouw Diamond Cutting.
Frans Swanepoelwas responsible for the sawing of the diamond and the cleaving of the lesser half of the diamond was done by Sylvain Mouw. The polishing of the two main diamonds of 137.02 (Big Rose) and 31.48 (Little Rose) ct. was done by David du Plessis (who was also responsible for polishing The Golden Jubileeand was one of the main polishers of the Centenary Diamond), and the 2.11 ct. (Baby Rose) was done by Mike Bothaand Willem Joubert. The stones resulting from the original stone have been named the, Premier Rose family, with the largest retaining the name of Premier Rose Diamond.
The Premier Rose collection ranks among the finest polished gems in the world and became the benchmark in symmetry and proportions for large fancy cut diamonds.
The diamond was subsequently named after the
Premier mineand Rose Mouw, hence the name Premier Rose.
This diamond had some inclusions, yet it was an unmistakably colourless gem. The diamond did not display a definite
crystallographichabit and was often incorrectly referred to as a 'cleavage piece'. If a resin model of the diamond is studied however, one would find no evidence of mechanical or natural cleavage on the diamond. The morphology of this diamond was due to plastic deformation during the eruption phaseof the kimberlite. The diamond did not exhibit any trigons on the octahedral faces (111) or noticeable striae on the dodecahedral faces (110) and the crystallographic orientation was derived from the presence of two orthogonal inversionson one of the hexahedral faces (100).
* [http://famousdiamonds.tripod.com/premierrosediamond.html Premier Rose Diamond @ Famous Diamonds]
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