stainless: (of reputation) free from blemishes; "his unsullied name"; "an untarnished reputation
not tarnished
My new bike is untarnished.
In spite of the scandal, his reputation remained untarnished.
Perfect, unblemished, untarnished.
It means, untainted, undamaged, something that is in good condition.
The fact that it is beautiful, shiny, untarnished and rare
Iridium looks much like platinum or untarnished silver.
Shiny, yellow, ductile, rare(precious), noble (untarnished), desired
clearness, brightness light sprit, joy and cloudsCleanliness and purity
Perfect is used to refer to something or someone that is entirely free of any flaws or defects.
Pristine, intact, refined, spotless, stainless, taintless, unadulterated, uncorrupted, undebased, unpolluted, unsoiled, unspotted, unstained, unsullied, untainted, untarnished, untouched,
fresh, ripe, unspoiled, untarnished, clean.
Advantages: beautiful, shiny, ductile, untarnished (as conductor), not allergenic, has a high value for small amount Disadvantages: too soft, dangerous to hold