拍品专文
US$650,000-850,000
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细节
A DIAMOND RING
SET WITH AN OLD MINE-CUT DIAMOND WEIGHING 6.04 CARATS, WITHIN A BRILLIANT-CUT DIAMOND GALLERY AND HALF-HOOP, MOUNTED IN 18K WHITE GOLD, RING SIZE 5¼
ACCOMPANIED BY REPORT NO. 1142575717 DATED 7 AUGUST 2012 FROM THE GEMOLOGICAL INSTITUTE OF AMERICA STATING THAT THE 6.04 CARAT DIAMOND IS D COLOUR, INTERNALLY FLAWLESS CLARITY; ALSO ACCOMPANIED BY A SUPPLEMENTAL LETTER FROM THE GEMOLOGICAL INSTITUTE OF AMERICA STATING THE 6.04 CARAT DIAMOND HAS BEEN DETERMINED TO BE TYPE IIA. TYPE IIA DIAMONDS ARE THE MOST CHEMICALLY PURE TYPE OF DIAMOND AND OFTEN HAVE EXCEPTIONAL OPTICAL TRANSPARENCY. TYPE IIA DIAMONDS WERE FIRST IDENTIFIED AS ORIGINATING FROM INDIA (PARTICULARLY FROM THE GOLCONDA REGION) BUT HAVE SINCE BEEN RECOVERED IN ALL MAJOR DIAMOND-PRODUCING REGIONS OF THE WORLD. AMONG FAMOUS GEM DIAMONDS, THE 530.20 CARAT CULLINAN AND THE 105.60 CARAT KOH-I-NOOR, ARE EXAMPLES OF TYPE IIA
ALSO ACCOMPANIED BY REPORT NO. 12050112 DATED 4 JUNE 2012 FROM THE GüBELIN GEMMOLOGICAL LABORATORY STATING THAT THE 6.04 CARAT DIAMOND IS D COLOUR, INTERNALLY FLAWLESS CLARITY; ALSO ACCOMPANIED BY A NOTE AND APPENDIX STATING THAT BASED ON ITS INFRARED SPECTRUM, THE 6.04 CARAT DIAMOND IS CLASSIFIED AS TYPE IIA. ADDITIONALLY THIS 6.04 CARAT DIAMOND POSSESSES AN ANTIQUE CUTTING STYLE WHICH IS RARELY ENCOUNTERED IN THE GEM TRADE TODAY. IT DISPLAYS A COLOUR AND DEGREE OF TRANSPARENCY WHICH ARE PARTICULAR TO THE UNIQUE GEMSTONES OF TYPE IIA. DIAMONDS OF THIS TYPE, EXHIBITING AN ANTIQUE CUTTING STYLE AS WELL AS A FINE QUALITY, ARE VERY RARE AND WILL MOST CERTAINLY EVOKE REFERENCES TO THE HISTORIC TERM OF 'GOLCONDA'
SET WITH AN OLD MINE-CUT DIAMOND WEIGHING 6.04 CARATS, WITHIN A BRILLIANT-CUT DIAMOND GALLERY AND HALF-HOOP, MOUNTED IN 18K WHITE GOLD, RING SIZE 5¼
ACCOMPANIED BY REPORT NO. 1142575717 DATED 7 AUGUST 2012 FROM THE GEMOLOGICAL INSTITUTE OF AMERICA STATING THAT THE 6.04 CARAT DIAMOND IS D COLOUR, INTERNALLY FLAWLESS CLARITY; ALSO ACCOMPANIED BY A SUPPLEMENTAL LETTER FROM THE GEMOLOGICAL INSTITUTE OF AMERICA STATING THE 6.04 CARAT DIAMOND HAS BEEN DETERMINED TO BE TYPE IIA. TYPE IIA DIAMONDS ARE THE MOST CHEMICALLY PURE TYPE OF DIAMOND AND OFTEN HAVE EXCEPTIONAL OPTICAL TRANSPARENCY. TYPE IIA DIAMONDS WERE FIRST IDENTIFIED AS ORIGINATING FROM INDIA (PARTICULARLY FROM THE GOLCONDA REGION) BUT HAVE SINCE BEEN RECOVERED IN ALL MAJOR DIAMOND-PRODUCING REGIONS OF THE WORLD. AMONG FAMOUS GEM DIAMONDS, THE 530.20 CARAT CULLINAN AND THE 105.60 CARAT KOH-I-NOOR, ARE EXAMPLES OF TYPE IIA
ALSO ACCOMPANIED BY REPORT NO. 12050112 DATED 4 JUNE 2012 FROM THE GüBELIN GEMMOLOGICAL LABORATORY STATING THAT THE 6.04 CARAT DIAMOND IS D COLOUR, INTERNALLY FLAWLESS CLARITY; ALSO ACCOMPANIED BY A NOTE AND APPENDIX STATING THAT BASED ON ITS INFRARED SPECTRUM, THE 6.04 CARAT DIAMOND IS CLASSIFIED AS TYPE IIA. ADDITIONALLY THIS 6.04 CARAT DIAMOND POSSESSES AN ANTIQUE CUTTING STYLE WHICH IS RARELY ENCOUNTERED IN THE GEM TRADE TODAY. IT DISPLAYS A COLOUR AND DEGREE OF TRANSPARENCY WHICH ARE PARTICULAR TO THE UNIQUE GEMSTONES OF TYPE IIA. DIAMONDS OF THIS TYPE, EXHIBITING AN ANTIQUE CUTTING STYLE AS WELL AS A FINE QUALITY, ARE VERY RARE AND WILL MOST CERTAINLY EVOKE REFERENCES TO THE HISTORIC TERM OF 'GOLCONDA'
荣誉呈献
Vickie Sek
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