@goldmatters
Did you know that gold matters even in medicine as nanoparticles?
Source
The nobility of gold and its resistance to surface oxidation is a very important factor.
The optical properties of gold at the nanoscale are also exciting, (gold nanoparticles have a colour varying from red to purple depending on particle size, a property that can be successfully exploited in a range of applications).
Gold nanoparticles are now known to be catalytically active for a range of commercially important reactions and they also have a surface chemistry particularly suited to the attachment of sulphur-containing molecules, such as thiols, which permits the 'bottom-up' assembly of interesting and useful structures.
Now that is some good information:)
Thanks.
Hope i have a chance of winning :)