American-Lacrosse.com

The Platinum Collection
Collection showcases jewellers who specialize in platinum. Site also offers consumer and retailer information, a history of platinum, and links to related web sites.
www.theplatinumcollection.co.uk/

Platinum Mart
Specializes in certified 85% pure platinum jewelry. Includes general platinum information and market data.
www.platinum-mart.com/

ChemGlobe: Platinum
Electronic, thermal, and steric data along with an isotope table.
partisans.spurious.biz/

Wikipedia: Platinum
Properties of the element, including its history, applications, and characteristics.
en.wikipedia.org/

WebElements: Platinum
Extensive information on history, uses, occurrence, compounds, and properties.
www.webelements.com/

EnvironmentalChemistry.com: Platinum
Atomic structure, chemical and physical properties, and table of nuclides.
environmentalchemistry.com/

ChemicalElements.com: Platinum
Basic information, atomic structure, and isotopes.
www.chemicalelements.com/

LANL: Platinum
Sources, properties, and uses.
periodic.lanl.gov/

Radiochemistry of Platinum
Full text of the monograph by G. W. Leddicotte (Oak Ridge National Laboratory, Oak Ridge, Tennessee). [PDF]
lib-www.lanl.gov/

Lenntech: Platinum
Physical data, chemical properties, health and environmental effects.
www.lenntech.com/