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稀有(けう)寶石(ほうせき)連載(れんさい)(ゆき)(いち))%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

中文(简体) Public

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<p>9000萬的緬甸紅寶石素顏照出爐,從圖上很明顯看到臺面中間及腰部邊緣的包裹體,越是成熟的市場對包裹體的認識越是理性,畢竟包裹體特征是鑒定天然寶石產地最重要的指標,也是上帝的賜予!</p>
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<p>說實在的,這顆蒙瞭吧唧的,我是不喜歡 ,一點火都不出。所以大傢買寶石也不要光參考拍賣會的圖~~ 素顏照嚇死人。反正拍賣會的東西我都見過實物 也就那樣吧</p>
<p>好瞭說正事~~</p>
<p>緬甸紅寶石有兩個主要產地,一是緬甸抹谷;另一個是緬甸孟素</p>
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<p><strong>1、緬甸抹谷紅寶石</strong></p>
<p>是世界上最精美的紅寶石(和藍寶石)的產地,以鴿血紅聞名於世,以致於“緬甸紅寶石”成為商業上優質紅寶石的代名詞。紅寶石采自沖積或殘坡積砂礦之中,其含礦母巖為大理巖。大理巖中侵入有花崗質正長巖,而紅寶石則分佈在接近正長巖的大理巖中。典型的產地特征有:</p>
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<p>(1)流紋狀色帶:紅色分佈不勻,可出現流紋狀的、團塊狀的色斑,被形象地稱為“糖漿狀”的色帶。</p>
<p>(2)雙晶和水鋁礦管狀體:聚片雙晶常見,平行於菱面體的面,偶然還會出現另一個方向的聚片雙晶,兩組雙晶幾乎以90度的面角相交。沿著兩雙晶面的交線,經常會有由細小的水鋁礦微晶集合形成的管狀體。沿雙晶面交線分佈是水鋁礦在剛玉寶石中的一種習性,在許多不同產地的剛玉寶石中都可以見到。</p>
<p>(3)補釘狀金紅石針:短針狀金紅石密集成白色團塊狀不均勻地分佈在紅寶石中,如同“補釘”。</p>
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<p>最具有產地意義的特征是:流紋狀色帶與短針狀的金紅石相伴出現,方解石晶體與致密網狀的金紅石針共生。</p>
<p>常見的其他包體還有,無色透明菱面體狀的方解石和白雲石,磷灰石和尖晶石等。此外還隻有石榴石、榍石、磁鐵礦和黑雲母等。偶爾可見充填瞭液體的空穴或負晶。</p>
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<p><strong>2、緬甸孟素紅寶石</strong></p>
<p>孟素(Mong SHu)是90年代發現的紅寶石新產地,位於抹谷南東方向約200公裡。紅寶石產於殘坡積層,其來源與下伏的大理巖密切相關,典型的產地特征有:</p>
<p>(1)顏色和色帶:紫紅色至褐紅色,紅寶石晶體的中心常見有深藍紫色的核心,經熱處理後,深藍紫色色斑多少消除,並呈暗紅色至紅色,有時還形成白色的絮狀物,導致透明度下降。</p>
<p>(2)生長帶:可見平行六方錐面的生長帶。在深藍紫色區域,在熱處理變紅後,可見平行底面的生長帶,是孟素紅寶石的典型特征。</p>
<p>(3)雙晶:聚片雙晶較抹谷紅寶石更為常見,並可出現多組不同方向的雙晶,以及沿雙晶面交線分佈的水鋁礦微晶組成的管狀體。</p>
<p>(4)網狀包裹體:常見的是三組淺色的幾乎無光澤的短針狀體,往往有兩組更為發育,約以120度交織成網狀體,另一組則幾乎與網面垂直,各種的分析方法尚無法確定它的成分,推測是具水鋁礦假象的剛玉。孟素紅寶石中金紅石針較少。</p>
<p>(5)其他晶體包裹體:含有白雲石、磷灰石、熒石、尖晶石和雲母等晶體包體。愈合裂隙多顯不規則的曲面狀,上面分佈有指紋狀排列的氣液包裹體。</p>
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<p>抹谷紅寶石礦區位於緬甸東北部的撣邦傑沙地區距曼得勒(瓦城)160多公裡,礦區包括賈賓、傑沙和抹谷等地區,寶石礦帶一般呈北東方向延伸。礦區寬度約20公裡,長約40公裡,礦化面積達1040平方公裡。</p>
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<p>紅寶石的挖掘過程也很艱難,機械化程度很差,有人到抹谷參觀過一個礦井,該礦井有一百多英尺深,每天生產進度約有一英尺,洞裡有一百多工人,平均每兩個挖礦工配一個監工(防偷)。雨季的時候不能挖礦(緬甸的雨季五個月左右),等雨季過瞭,要聯合左右鄰居一起抽水,每年有時要抽兩三個月的水,真正挖礦的時間也隻有幾個月。</p>
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<p>礦井外觀</p>
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<p>礦井口</p>
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<p>剛剛挖上來的礦石。</p>
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<p>就用這一根繩子將礦石拉上來。</p>
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<p>這些礦石是等雨季的時候再選。</p>
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<p>抹谷的水,因為要清洗礦石,變得很混濁,老百姓說如果抹谷的水清瞭,老百姓就窮瞭</p>
<p>關於緬甸紅寶若幹問題:</p>
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<p>1、Myanmar或者Burma是頂級紅寶石的證明嗎?</p>
<p>這個說法太籠統。無論Myanmar或者Burma出現在權威證書Original一欄,都隻證明這顆寶石產自緬甸。但緬甸註明的紅寶石礦區不隻一個,並不是每個礦區所產的紅寶石都是頂級。</p>
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<p>2、頂級鴿血紅出自哪裡?</p>
<p>出產頂級鴿血紅寶石的主要礦區——Mogok莫谷。它位於緬甸。它位於緬甸的Kathe克岱地區,是全世界最經典、最重要的紅寶石礦區,也是全世界最優質的鴿血紅寶石產地。這裡的紅寶石即便不是鴿血紅,但因為含有豐富的Cr2O3(2%~3%)而具有非一般鮮艷的紅色。坊間傳聞“隻有產自緬甸Mogok地區的鴿血紅寶才是正統鴿血紅”。實際上,這種說法是錯誤的。紅寶石在東南亞一帶及非洲部分地區都有出產,其中也有鴿血紅寶石的身影。</p>
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<p>鴿血紅隻是一個商業概念,並不指示特定產地。世界各大寶石鑒定機構對“鴿血紅”的證書定名均是根據紅寶石中致色元素Cr的含量,以及色相、飽和度、透明度等各項指標與非常嚴格的標準比對得出。</p>
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<p>3、怎樣的紅寶石產自莫谷?</p>
<p>放大20倍,你看到瞭一片片五彩斑斕的針狀包裹體,它們似乎順著三個方向排列,恭喜你,你已經找到瞭鴿血紅寶石看起來仿佛燃燒一般的真正原因。當然,如果你還看到瞭另一驚喜——“蜜糖狀”構造,那麼它是莫谷紅寶石無疑。這種具有流動特點的漩渦紋構造曾一度被認為是莫谷紅寶石的絕對依據,但後來發現其他產地也有極個別類似特點,因此要與定向排列的紅石內部包體共同來判定。</p>
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<p>4、不同產區出產,價格差異較大</p>
<p>雖然多地區都有出產鴿血紅寶石,但隻有緬甸Mogok礦區出產的鴿血紅寶石由於出眾的品質和較少的產出量,被公認為最具商業價值,價格也遠遠凌駕於其它地區之上。</p>
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<p>Myanmar緬甸——亞洲頂級紅寶石產地</p>
<p>Pigeon’s Blood</p>
<p>如流動的血液般鮮艷強烈的深紅色,既純凈又明亮,像是一團熾熱的火焰在燃燒。稱之為鴿血,有一種說法是:曾有人將這種紅色與自然界中各種各樣的紅色對比,卻發現隻有緬甸當地成年鴿子動脈中的鮮血比較接近,而且這種血必須是新鮮跳動的鮮血,一旦離開鴿子的身體超過十幾秒鐘,便在不可與“鴿血”紅寶石對比瞭。</p>









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稀有寶石連載之(一)——緬甸紅寶石
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