A RARE PARAIBA TOURMALINE AND DIAMOND RINGA RARE PARAIBA TOURMALINE AND DIAMOND RINGSet with a modified shield brilliant-cut Paraiba tourmaline, weighing 5.09 carats, within a pear-shaped and marquise-cut diamond surround: estimated total diamond weight 1.91 carats; mounted in platinum; size 6½ Accompanied by an AGL report stating that natural Paraiba tourmaline originates from Brazil, greenish blue colour. Report #8086841, dated 26 September 2017.Accompanied by a GIA report stating that the natural Paraiba tourmaline originates from Brazil, blue colour. Report #7261294675, dated 11 July 2017. 5.09克拉天然巴西帕拉伊巴碧璽配鑽石戒指鑽石共重約1.91克拉,戒圍6½,附AGL及GIA證書Paraiba TourmalineAlmost every shade of tourmaline can be found in Brazil, but it was not until the 1980s, after years of mining, gem-hunter Heitor Dimas Barbosa discovered the neon stone in the state of Paraiba. Referred to by its species name, cuprian elbaite, the gemstone soon became known as Paraiba and took the gem world by storm. The traditional jewellery houses, such as Bulgari, Cartier and Harry Winston have included them in their high jewellery collections. They range in colour from neon blue, greenish blue, blue-green, green, mint green; however, the most sought-after stones exhibit a vivid neon almost electric blue with strong saturation. Traditionally mined in Brazil, copper bearing tourmalines have been discovered in both Mozambique and Nigeria. Although very similar, only those stones mined in Brazil can be defined as 'Paraiba' and tend to be in greater demand. This 5.09 carat Paraiba is a quintessential example of the gemstone: rare size, neon colour, fine clarity and of Brazilin origin. A true gem for a collector or connoisseur.帕拉伊巴碧璽巴西出產多色系高質數碧璽，直到1980年代，經過多年的開採，寶石獵人 Heitor Dimas Barbosa 在帕拉伊巴州發現了這種霓虹藍光石。這種寶石以其物種名稱銅鉀鋰輝石而著稱，很快就以其發源地命名為帕拉伊巴，並席捲了寶石界。寶格麗、卡地亞和海瑞溫斯頓等傳統珠寶品牌已將它納入其高級珠寶系列。它們的顏色範圍包括霓虹藍、綠藍、藍綠、綠色、薄荷綠；然而，最受歡迎的色系呈現出鮮豔的霓虹藍至電藍色，具有很強的飽和度。傳統上在巴西開採，但在莫桑比克和尼日利亞都發現了含銅碧璽。雖然非常相似，但只有那些在巴西開采的碧璽才能被定義為"Paraiba"，並且需求量更大。這顆 5.09 克拉的帕拉伊巴是其中寶石的典型代表：罕見的重量、電光霓虹藍色、優美的淨度和巴西原產地。適合寶石收藏家或寶石鑑賞家的真正寶石。