Mine It Diamond or Gold - Assorted ( Only One Item Is Sent at Random )

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McHugh, J. B. (1988). "Concentration of gold in natural waters". Journal of Geochemical Exploration. 30 (1–3): 85–94. Bibcode: 1988JCExp..30...85M. doi: 10.1016/0375-6742(88)90051-9. Archived from the original on 7 March 2020. Heike, Brian. "Formation of Lode Gold Deposits". Arizona Gold Prospectors. Archived from the original on 22 January 2013 . Retrieved 24 February 2021. Kwarteng, Kwasi. War and Gold: A Five-Hundred-Year History of Empires, Adventures, and Debt (2014) online

Gibson, Kate; Chang, Sue (11 May 2010). "Gold futures hit closing record as investors fret rescue deal". MarketWatch . Retrieved 4 August 2010.

Everingham says mining companies promise jobs and other economic opportunities around the construction and operation of a mine, but the trade-off is the environmental impact. The regulators are housed in the same department as those tasked with promoting the industry. “Balancing those key tensions is a big challenge,” she says.

Lide, D. R., ed. (2005). "Magnetic susceptibility of the elements and inorganic compounds". CRC Handbook of Chemistry and Physics (PDF) (86thed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5. Further information: History of money Two golden 20 kr coins from the Scandinavian Monetary Union, which was based on a gold standard. The coin to the left is Swedish and the right one is Danish.Gold is thought to have been produced in supernova nucleosynthesis, and from the collision of neutron stars, [52] and to have been present in the dust from which the Solar System formed. [53] Gold solder is used for joining the components of gold jewelry by high-temperature hard soldering or brazing. If the work is to be of hallmarking quality, the gold solder alloy must match the fineness of the work, and alloy formulas are manufactured to color-match yellow and white gold. Gold solder is usually made in at least three melting-point ranges referred to as Easy, Medium and Hard. By using the hard, high-melting point solder first, followed by solders with progressively lower melting points, goldsmiths can assemble complex items with several separate soldered joints. Gold can also be made into thread and used in embroidery.

Gold can be used in food and has the E number 175. [201] In 2016, the European Food Safety Authority published an opinion on the re-evaluation of gold as a food additive. Concerns included the possible presence of minute amounts of gold nanoparticles in the food additive, and that gold nanoparticles have been shown to be genotoxic in mammalian cells in vitro. [202]Alborn, Timothy (2017). "The Greatest Metaphor Ever Mixed: Gold in the British Bible, 1750–1850". Journal of the History of Ideas. 78 (3): 427–447. doi: 10.1353/jhi.2017.0024. PMID 28757488. S2CID 27312741.

Moors, Annelies (2013). "Wearing gold, owning gold: the multiple meanings of gold jewelry". Etnofoor. 25 (1): 78–89. ISSN 0921-5158. OCLC 858949147. Johnson, P. B.; Christy, R. W. (1972). "Optical Constants of the Noble Metals". Physical Review B. 6 (12): 4370–4379. Bibcode: 1972PhRvB...6.4370J. doi: 10.1103/PhysRevB.6.4370.Plazak, Dan A Hole in the Ground with a Liar at the Top (Salt Lake: Univ. of Utah Press, 2006) ISBN 0-87480-840-5 (contains a chapter on gold-from seawater swindles) The consumption of gold produced in the world is about 50% in jewelry, 40% in investments, and 10% in industry. [11] [146]