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The Properties and Applications of Platinum - ThoughtCo
- https://www.thoughtco.com/metal-profile-platinum-2340149
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Photographic Processes: Platinum and Palladium Prints …
- https://www.loc.gov/rr/print/coll/589_platinum.html
- Description: The platinum printing process was popular in the late 19th century. It used platinum and/or palladium salts instead of silver as the light sensitive material. These prints are characterized by their ability to reproduce a long …
What’s So Special About Platinum? | HowStuffWorks
- https://science.howstuffworks.com/environmental/earth/geology/platinum.htm
- However, because platinum jewelry is more pure (typically 95 percent platinum versus 58.5 percent gold in 14 kt. gold jewelry) and more dense than gold, it will still cost a bit more than a similar gold ring," she notes. (On July 9, 2019, the price of platinum was $816.60 per ounce. Gold was per ounce.)
Platinum, Chemical Element - Chemistry Explained
- http://www.chemistryexplained.com/elements/L-P/Platinum.html
- Platinum is a silver-gray, shiny metal that is both malleable and ductile. Malleable means capable of being hammered into thin sheets. Platinum can be hammered into a fine sheet no more than 100 atoms thick, thinner than aluminum foil. Ductile means …
Platinum - Properties - Price - Applications - Production
- https://material-properties.org/platinum-properties-applications-price-production/
- Raw materials prices change daily. They are primarily driven by supply, demand and energy prices. In 2019, prices of pure Platinum were at around 31500 $/kg. Platinum, along with the rest of the platinum-group metals, is obtained commercially as a by-product from nickel and copper mining and processing.
Platinum toned silver prints? | Photrio.com Photography …
- https://www.photrio.com/forum/threads/platinum-toned-silver-prints.27092/
- When you tone a silver print with gold, platinum or palladium there is a reaction by which the nobel metal replaces most of the silver. Toning silver prints with gold, palladium and platinum was very common practice in 19th century. Sandy King. For discussion and information about carbon transfer printing please visit my carbon group at Yahoo ...
Platinum Jewelry: What are PGM and Platinum Marks?
- https://www.liveabout.com/platinum-jewelry-information-2043747
- Jewelry that contains at least 950 parts per thousand of platinum group metals, with at least 500 parts per thousand of the total pure platinum, may be marked as platinum as long as the numbers of each metal are disclosed. For instance, "600 Pt. 350 Ir." or 600 Plat. 350 Irid." for 600 parts pure platinum and 350 parts iridium "550Pt. 350Pd. 50Ir."
Does Platinum Tarnish Like Silver or Turn …
- https://www.afashionblog.com/does-platinum-tarnish/
- Platinum jewelry. Platinum is regarded as one of the top-rated white metals, but what you need to know is that for a white metal to be considered platinum, the piece of metal in question must have at least 95% of platinum.As a result, platinum is regarded as one of the purest precious metals on the scene. The catch, however, is that platinum will fade after some time, but unlike other …
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