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2. Platinum as an investment - Wikipedia

   en.wikipedia.org/wiki/Platinum_as_an_investment

   American Platinum Eagle, the official platinum bullion coin of the United States. Platinum as an investment is often compared in financial history to gold and silver, which were both known to be used as money in ancient civilizations. Experts posit that platinum is about 15–20 times scarcer than gold and approximately 60–100 times scarcer ...

3. Hierarchy of precious substances - Wikipedia

   en.wikipedia.org/wiki/Hierarchy_of_precious...

   In popular culture, sets of precious substances may form hierarchies which express conventional perceived relative value or merit. Precious metals appear prominently in such hierarchies, but as they grow, gems and semi-precious materials may be introduced as part of the system. The sequences can provide interesting examples of the arbitrariness ...

4. Gold as an investment - Wikipedia

   en.wikipedia.org/wiki/Gold_as_an_investment

   Size of a 100 gram gold bar - packaged inside an assay for proof of authenticity - compared to a playing card. Of all the precious metals, gold is the most popular as an investment. Investors generally buy gold as a way of diversifying risk, especially through the use of futures contracts and derivatives.

5. Platinum vs. Gold Investment: Which Is Better?

   www.aol.com/finance/platinum-vs-gold-investment...

   Platinum and gold are two precious metals and … Continue reading → The post Platinum vs. Gold Investment: Which Is Better? appeared first on SmartAsset Blog.

6. Prices of chemical elements - Wikipedia

   en.wikipedia.org/wiki/Prices_of_chemical_elements

   As of 2020, the most expensive non- synthetic element by both mass and volume is rhodium. It is followed by caesium, iridium and palladium by mass and iridium, gold and platinum by volume. Carbon in the form of diamond can be more expensive than rhodium. Per-kilogram prices of some synthetic radioisotopes range to trillions of dollars.

7. Platinum - Wikipedia

   en.wikipedia.org/wiki/Platinum

   Platinum is a member of the platinum group of elements and group 10 of the periodic table of elements. It has six naturally occurring isotopes. It is one of the rarer elements in Earth's crust, with an average abundance of approximately 5 μg /kg. It occurs in some nickel and copper ores along with some native deposits, mostly in South Africa ...