An Exceptional Sapphire and Diamond RingThe antique cushion-shaped sapphire, weighing 5.01 carats, between single-cut diamond shoulders, ring size 5½注脚Accompanied by a SSEF report stating that the natural sapphire has no indications of heat treatment and originates from Kashmir. Report number 105838, dated 20 March 2019.Accompanied by an AGL (American Gemological Laboratories) report stating that the natural sapphire has no evidence of heat enhancement and originates from Kashmir. Report number 8088740, dated 14 February 2019.Accompanied by a Gubelin report stating that the natural sapphire has no indications of heat treatment and originates from Kashmir. Report number 18122040, dated 3 January 2019. Also accompanied by an information sheet, stating that natural unheated gem-quality sapphires from Kashmir are scarce.5.01克拉天然無經加熱處理喀什米爾藍寶石配鑽石戒指戒指尺寸5½，附SSEF,AGL及Gubelin證書KashmirKashmir sapphires were first discovered in the late 1870s/early 1880s high up in the snow-clad Great Himalayas of north-western India. The area was worked sporadically until the late 1920s/early 1930s but the glory years of the 1880s were never repeated. Legend tells that the finest stones from this 30-40 year period were all acquired by the Maharaja and jealously guarded in the chambers of the Kashmir State Treasury. British geologist, Charles Stewart Middlemiss, Superintendent of the Mineral Survey of Jammu and Kashmir State from 1917 until 1930, recorded seeing some of this fabled hoard, describing the sacks of rough and cut gems as a "king's ransom", with some sapphires the size of polo balls.Today, Kashmir sapphires set the standard against which all other sapphires are measured and are avidly sought by collectors who are prepared to pay princely sums for top-quality specimens from this extraordinary period in the history of gemmology. 喀什米爾喀什米爾藍寶石首次在十八世紀70年代末到80年代初期在印度西北部積雪覆蓋的喜馬拉雅山脈被發現, 雖然該地區有零星的採礦活動直到二十世紀20年代末到30年代初，但十八世紀80年代初的光榮歲月己一去不返。有傳説道，這三十至四十年期間的最優質藍寶石都是由印度君主購得，並藏於喀什米爾國庫內。英國地質學家Charles Stewart Middlemiss在1917年至1930年間是喀什米爾國家礦物調查總監，看過傳說中的這些寶物，描述一袋袋原石及已切割的寶石為"國王的贖金"，一些藍寶石更大如馬球般。今天，喀什米爾藍寶石製定了衡量所有其他藍寶石的標準，並被收藏家熱切追捧, 對于來自寶石學史黄金歲月裏的最優質寶石, 他們不惜為之一擲千金。