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</ul> </nav> </div> </header> <div id="tmyyfroktkho" class="con main"> <div id="tmyyfroktkho" class="position"> <em class="iconfont ca icon-dingwei"></em> <a href='http://www.rzpgrj.com/'>學(xué)習(xí)啦</a> > <a href='http://www.rzpgrj.com/shenghuo/'>生活課堂</a> > <a href='http://www.rzpgrj.com/shenghuo/jinen/'>生活技能學(xué)習(xí)</a> > <a href='http://www.rzpgrj.com/shenghuo/gouwu/'>購(gòu)物知識(shí)</a> > <span>黑珍珠如何鑒別其真?zhèn)?/span> </div> <div id="tmyyfroktkho" class="ar_con_nr"> <div id="tmyyfroktkho" class="con_l fl"> <article class="ar_con bg louti"> <div id="tmyyfroktkho" class="ar_title"> <h1>黑珍珠如何鑒別其真?zhèn)?/h1> <div id="tmyyfroktkho" class="ar_title_b"> <div id="tmyyfroktkho" class="sub_title clear"> <span id="tmyyfroktkho" class="sp2 c6 fl">時(shí)間：<time class="fxtime">2017-08-30 16:01:13</time></span> <span id="tmyyfroktkho" class="sp1 c6 fl"><em id="zuozhe" class="noshow">春燕</em><em class="user_id noshow">1108</em>由 <em class="nickname"></em> 分享</span> <span id="tmyyfroktkho" class="fl arc_btn"></span> </div> </div> </div> <div id="tmyyfroktkho" class="y_ju"><script type="text/javascript">a("title");</script></div> <div id="tmyyfroktkho" class="con_article con_main" id="contentText"> <p>黑珍珠如何鑒別其真?zhèn)?/p><p> 　　優(yōu)質(zhì)黑色珍珠的年產(chǎn)量估計(jì)不超過(guò)15萬(wàn)顆，其中40%通過(guò)一年一度的國(guó)際拍賣會(huì)出售。對(duì)于如此稀少的黑珍珠應(yīng)該怎么鑒定真?zhèn)文?以下是學(xué)習(xí)啦小編為你整理的黑珍珠如何鑒別真?zhèn)?，希望能幫到你?/p><h2> 　　黑珍珠如何鑒別真?zhèn)?/h2><p> 　　1、顏色的展布</p><p> 　　染色的黑珍珠顏色均一，且在鉆孔和裂紋的地方聚集的黑色較深。表面顏色為純黑色，而天然黑珍珠非純黑，而是有輕微彩虹樣的閃光的深藍(lán)黑色，或帶有青銅色調(diào)的黑色。</p><p> 　　2、粉末法</p><p> 　　染色的黑珍珠其粉末為黑色而黑珍珠其粉末為白色。但取珍珠粉末是一種破壞性試驗(yàn)，操作時(shí)要十分小心，尤其不能在沒(méi)有鉆孔的黑珍珠上任意刻取。</p><p> 　　3、粒度大小法</p><p> 　　黑珍珠多為大珠母貝，多殖大核育大珠，粒徑一般很少小于9毫米，所以小于8毫米為圓形黑珍珠，多半是輻照產(chǎn)品。</p><p> 　　4、暈彩</p><p> 　　經(jīng)過(guò)放射性輻射改色的黑珍珠，暈彩光譜色濃艷，同時(shí)伴有強(qiáng)的金屬光澤。</p><p> 　　5、稀酸法</p><p> 　　在某些情況下，也可用棉球蘸些稀硝酸(2%)在珍珠不顯眼的地方進(jìn)行試擦，染色的黑珍珠會(huì)使棉球呈黑色。此法屬破壞性方法，應(yīng)當(dāng)少用為佳。然而，有豐富經(jīng)驗(yàn)的鑒定師?？梢栽谥恼渲樯险业狡凭`。</p><h2> 　　天然珍珠與插核養(yǎng)殖黑珍珠的鑒別</h2><p> 　　用雙管熒光臺(tái)燈對(duì)黑色珍珠項(xiàng)鏈進(jìn)行外觀觀察，如果黑珍珠的形狀、顆粒大小都相同，換句話說(shuō)，如果一條項(xiàng)鏈由大小統(tǒng)一的球形珍珠組成，極有可能是一條插核養(yǎng)殖珍珠項(xiàng)鏈。因?qū)嵺`證明，要找到形狀大小都相同的一對(duì)天然珍珠是很難的，何況要找到形狀大小都相同的一條珍珠項(xiàng)鏈更是難上加難，實(shí)際是不存在的。天然珍珠串大多按顆粒大小分級(jí)，而不同大小的顆粒在形狀通常是不同的。</p><p> 　　從顏色觀察分析，養(yǎng)殖插核珍珠項(xiàng)鏈顏色統(tǒng)一性比天然珍珠顏色統(tǒng)一性好的多。</p><p> 　　從珠層表面觀察，若發(fā)現(xiàn)有“圓圈紋”和“魚尾紋”等特征，很大可能是養(yǎng)殖珍珠。天然珍珠不具有這種特征。在好的光纖等照明下，用10倍放大鏡觀察，如果珍珠層上有“母指圈紋”形齒狀外觀，很有可能是天然珍珠或養(yǎng)殖珍珠，他與仿制珍珠的結(jié)果有極大查邊，仿制珍珠的結(jié)構(gòu)是一種光滑的外觀。</p><p> 　　用調(diào)節(jié)亮度的小徑光纖等照明觀察珍珠的鉆孔，如果發(fā)現(xiàn)有薄似洋蔥層的同心結(jié)構(gòu)為天然珍珠，如果發(fā)現(xiàn)一個(gè)灰色至白色的中心貝殼珠，貝殼與黑色珍珠曾之間有一薄層褐色致黑色有機(jī)層，那么這是插核養(yǎng)殖黑色珍珠。</p><h2> 　　黑色珍珠與染色珍珠的鑒別</h2><p> 　　1.觀察珍珠表面有無(wú)鉆孔，最好用10倍放大鏡觀察，若無(wú)鉆孔，則大多數(shù)為天然珍珠(或養(yǎng)殖珍珠)，如有鉆孔則很大可能為染色珍珠。因?yàn)槿旧珪r(shí)必須先打鉆孔，才能使染色進(jìn)入。</p><p> 　　2.利用10倍放大鏡，認(rèn)真觀察珍珠表面，有無(wú)藍(lán)色染料及由輻射處理所遺留的小針點(diǎn)，如有藍(lán)色染料參在，為染色珍珠。如無(wú)藍(lán)色染料則為天然或養(yǎng)殖黑色珍珠，若無(wú)太多的小針點(diǎn)，則為天然或養(yǎng)殖的黑色珍珠，若有較多的小針點(diǎn)，則為染色珍珠。</p><p> 　　3.利用10倍放大鏡仔細(xì)觀察鉆孔，鉆孔中如有藍(lán)色染料集中，則為染色珍珠，若無(wú)則為天然或養(yǎng)殖黑珍珠。</p><p> 　　4.利用偏光顯微鏡觀察珍珠，若為天然或養(yǎng)殖珍珠，其顏色不均一</p><p> 　　5.紅外線攝影，利用紅外線底片拍照，若為天然黑色珍珠，則顯影為淺藍(lán)色，而用銀鹽處理的黑色珍珠則呈黃色至藍(lán)綠色。</p><p> 　　6.熒光測(cè)試，天然或養(yǎng)殖黑色珍珠，在紫外線下常呈現(xiàn)鮮紅至咖啡色，而染色的黑色珍珠大多沒(méi)有反應(yīng)或呈現(xiàn)微弱的綠色熒光。</p><p> 　　7.X光測(cè)試，用X光照射出來(lái)的相片，能將用銀鹽處理法處理的珍珠顯影出來(lái)，染色的黑色珍珠在珠層與珠核之間呈現(xiàn)一圈灰白色暗影。</p><p> 　　此外，珍珠層厚度也可以利用X光照相予以確定，當(dāng)然要求珠層厚度最少在1mm以上，愈厚愈好也愈值錢。<br/></p><p> 猜你感興趣：</p><p> 1.<a _href="http://www.rzpgrj.com/sheji/yishu/zhubao/28218.html" href="http://www.rzpgrj.com/sheji/yishu/zhubao/28218.html" target="_blank">如何辨別珍珠粉的真假方法</a></p><p> 2.<a _href="http://www.rzpgrj.com/shenghuo/gouwu/3683813.html" href="http://www.rzpgrj.com/shenghuo/gouwu/3683813.html" target="_blank">好玉的鑒別方法有哪些</a></p><p> 3.<a 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