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  1. ...10 Karats http://www.g9999.com/chinese/market_features/ purity .php

  2. ...http://www.pointgold.com.tw/gold-1.htm http://www.g9999.com/chinese/market_features/ purity .php http://www.sun-e.com.tw/sfront/knowmain.asp http://www.lovegold.com.tw/big5/cheng.htm

  3. ... ) bar which was manufactured before 1975 was 999.9 purity and weighed exactly 37.5 grams. Although called a...

  4. ...與否的主要因素,高品質黑珍珠的光澤有如鏡子一樣。E. 瑕 疵( PURITY ):  大溪地珍珠的理想珠層厚度在1-1.5mm左右,一顆好的黑珍珠表面應該沒有...

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