Does Gold Filled Tarnish?

" From the Conservator's Bench: Cleaning Gold Artifacts | Gilcrease Museum." Home | Gilcrease Museum. N.p., n.d. Web. 17 Jan. 2012. .

"Units: K." Home | The University of North Carolina at Chapel Hill. N.p., n.d. Web. 17 Jan. 2012.   

Gold Plated Vs Gold Filled

" - definition of gold-filled by the Free Online Dictionary, Thesaurus and Encyclopedia gold-filled.." Dictionary, Encyclopedia and Thesaurus - The Free Dictionary. N.p., n.d. Web. 13 Jan. 2012. .

" Gold Plating : Products Finishing ." Suppliers, Technical Resources, News and Events for the Finishing Industries : Products Finishing . N.p., n.d. Web. 13 Jan. 2012. .

"Plating with Gold." Gold Plating Services. N.p., n.d. Web. 12 Jan. 2012. .   

Is Gold a Mineral?

"The Periodic Table - Gold | Mineral Information Institute." Welcome - Mineral Information Institute. N.p., n.d. Web. 1 Dec. 2011. .

"Mohs Scale of Hardness." American Federation of Mineralogical Societies. N.p., n.d. Web. 1 Dec. 2011. .   

What Does Gold Filled Mean?

"All That Glitters... How to Buy Jewelry." Federal Trade Commission. N.p., n.d. Web. 4 Aug. 2010. http://www.ftc.gov/bcp/edu/pubs/consumer/products/pro02.shtm.

"artisan plating.com ." artisan plating.com . N.p., n.d. Web. 4 Aug. 2010. http://www.artisanplating.com/articles/goldfilled.html.

"Gold Fill." Timeless Treasures Antique . N.p., n.d. Web. 4 Aug. 2010. http://www.csu-saaa.org/auxiliary/GoldFill.html.  

What Is the Density of Gold?

"Density of Gold." Elmhurst College: Elmhurst, Illinois. N.p., n.d. Web. 1 Dec. 2011.

"Q & A: Gold vs. Iron | Department of Physics | University of Illinois at Urbana-Champaign." Physics Van | Department of Physics | University of Illinois at Urbana-Champaign. N.p., n.d. Web. 1 Dec. 2011. . 

What Is Fool's Gold?

"Iron Pyrite." University of Wisconsin Department of Chemistry. N.p., n.d. Web. 1 Dec. 2011. https://www.chem.wisc.edu/deptfiles/genchem/lab/ptl/ptl/Minerals/pyrite.html

"Fool's Gold (2008) - IMDb." The Internet Movie Database (IMDb). N.p., n.d. Web. 1 Dec. 2011. http://www.imdb.com/title/tt0770752

What Is a Karat?

"karat." Sizes of things and the units used to describe them.. N.p., n.d. Web. 19 July 2010. http://www.sizes.com/units/karat.htm.

"Archaeologist Finds Oldest Known Gold Artifacts in the Americas (4/5/2008)." FossilScience.com - Fossil Science News. N.p., n.d. Web. 19 July 2010. http://www.fossilscience.com/Research/Archaeologist_Finds_Oldest_Known_Gold_Artifacts_in_the_Americas.asp.

"American Buffalo 24-K Gold Coin Program." The United States Mint Home. N.p., n.d. Web. 19 July 2010. http://www.usmint.gov/mint_programs/buffalo24k/?flash=yes.    

What Is the Difference Between Platinum and Gold?

"platinum group (chemical element group) -- Britannica Online Encyclopedia ." Encyclopedia Britannica Online Encyclopedia . N.p., n.d. Web. 2 Aug. 2010. http://www.britannica.com/EBchecked/topic/1357173/platinum-group.

"It's Elemental - The Element Gold." Science Education at Jefferson Lab. N.p., n.d. Web. 2 Aug. 2010. http://education.jlab.org/itselemental/ele079.html.

"Is Platinum worth the price? Why is Platinum so much more expensive than the other white metals? Comparing Platinum to White Gold! The Other White Metal! Platinum's not cheap! Is buying Platinum worth the price tag? - Jewelry-Secrets.com." Jewelry Secrets - Diamond Engagement Ring Tips - Jewellry Truth and Lies - Jewelry-Secrets.com. N.p., n.d. Web. 2 Aug. 2010. http://www.jewelry-secrets.com/Metals/Platinum/Platinum-vs-Other-Metals/Is-Platinum-Worth-The-Price.html.    

What Is White Gold?

 "Guidelines to define the colour of white gold > Utilise Gold. Scientific, industrial and medical applications, products ,suppliers from the World Gold Council." Utilise Gold Homepage > Utilise Gold. Scientific, industrial and medical applications, products ,suppliers from the World Gold Council. N.p., n.d. Web. 19 July 2010. http://www.utilisegold.com/jewellery_technology/colours/white_guide/.

"GretagMacbeth Munsell Color Assurance Lab Helps Jewelry Industry Make the Grade." Marketwire: press release distribution, newswire, public relations,investor relations, breaking news, media monitoring. N.p., n.d. Web. 19 July 2010. http://www.marketwire.com/press-release/GretagMacbeth-Munsell-Color-Assurance-Lab-Helps-Jewelry-Industry-Make-the-Grade-662391.htm.

"What Is White Gold." Utilise Gold. N.p., n.d. Web. 19 July 2010. www.utilisegold.com/assets/file/jewellery/technology/pdf/SFBK_WhitegoldChris%20Corti.pdf.  

Where Is Gold Found on Earth?

"Gold production in the world.." Oil gaz gold silver price and production by dr Thomas Chaize. N.p., n.d. Web. 21 July 2010. http://www.dani2989.com/gold/goldprod2010gb.htm.

"World's Largest Gold Producers and Gold Mining Stocks." MoneyEnergy - DRIP Investing for Dividend Growth, Cashflow and Financial Freedom. N.p., n.d. Web. 21 July 2010. http://www.getmoneyenergy.com/2009/10/top-largest-global-gold-stocks.

"Grasberg Open Pit Copper Mine, Tembagapura, Irian Jaya, Indonesia - Mining Technology." Mining Technology. N.p., n.d. Web. 21 July 2010. http://www.mining-technology.com/projects/grasbergopenpit.