They sell two types of plumbers putty one that is stain free and is for use on stuff like marble granite quartz etc.
Can you use plumbers putty on cultured marble.
The stain can be removed through a marble cleaning technique known as poulticing most of the marble used to create kitchen counters is synthetic or cultured marble not true marble.
For this reason plumber s putty should not be used on naturally absorbent surfaces such as marble.
I recommend that you use silicone.
Will not crack or shrink.
Stain free plumber s putty on granite marble quartz sandstone and other natural porous materials.
Plumber s putty can and will cause staining on any of the cultured products such as cultured marble granite and onyx.
Stuff that is more porous than stainless steel or whatever.
Do not use on cultured marble.
If you check the label on your plumber s putty you should see a note that says something to the effect.
However you do need to provide a sealant between the drain and your new cultured marble sink.
However if the damage has already been done do not worry.
For setting frames faucets and basket strainers use this oatey 9 oz.