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客戶送驗一只手鐲，業者以壽山田黃石名義銷售！猛一看顏色呈現橙紅色，且有許多紅色的絲狀紋理。以拉曼光譜儀和顯微鏡檢驗確認後，證實為染色蛇紋石，由於這種半透明黃色蛇紋石產自中國遼寧省岫岩縣，所以又稱為岫岩玉或岫玉。染色岫玉在市場上常用於仿做田黃或雞血石。田黃是壽山石的一個分支，主要成為為地開石，有許多不同顏色類型，染色岫玉主要仿橘皮紅田黃，因其染色造成的紅絲可假冒田黃表面的紅筋(裂隙氧化鐵沈澱)。除此之外，也時有耳聞以染色蛇紋石仿製雞血石，但是其色澤怪異，並不難區別。染色岫玉在仿古玉的市場上也屬常客，天然蛇紋石顏色有白、黃、綠、墨綠等，少有褐紅等次生色，染色岫玉則可染紅、褐等色，也可做舊仿古。雖然很假，但是難免還是有人受騙上當喔！
A bangle from our client is claimed by seller to be Tianhuang stone. The bangle is orangey red in color and is identified by TULAB gemologist as dyed serpentine with raman spectroscopy and microscope. This translucent yellow serpentine is from
Xiuyan County, Liaoning Province, China; thus, it is known as xiuyan jade in jewellery market. Dyed serpentine is a common simulant for both Tianhuang stone or Chinese blood stone. Tianhuang stone is composed of dickite of various color type. Dyed serpentine looks similar to orangey red Tianhuang stone because of their color and texture. Sometimes, dyed serpentine is sold on the name of Chinese blood stone; however, it is not difficult to identify for6 its strange color. Besides, dyed serpentine is common simulant for archaic jade; natural serpentine can be dyed into red or brown and fake the archaic jade.
客戶送驗的染色岫玉手鐲
Dyed serpentine from our client.
蛇紋石表面裂隙中的紅色染料
Red dye in the surface fissures of serpentine
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