The following information is provided for easy reference.

PotatoCenterRiceMost Common Fineness FactorsB & S Gauge

Conversion TableMost Popular Carat/mm Stone (Approx. diamond size)

If you need more information related to the size or any calculation method, click_here and our representatives will assist you immediately.

American Museum of Natural History, New York
http://www.amnh.org/exhibitions/pearls/

Baselworld – The Watch and Jewelry Show
http://www.baselworld.com

Field Museum, Chicago
http://www.fmnh.org/pearls/index.html

Hong Kong Trade Development Council
http://www.tdctrade.com

Hong Kong Jewelry Manufacturers' Association
http://www.jewelry.org.hk/frontground/defaultE.asp

JCK International Publishing Group
http://www.jckgroup.com/

JDI Award and Jewelry Design Contests organized by HKJMA
http://www.jdicompetition.com

Jewel Information for you
http://www.jewelinfo4u.com

Pearl Guide
http://www.pearl-guide.com

World Gold Council
http://www.gold.org