All that I can remember from the dim recesses of my memory:
It was like a Sears catalog but tended to offer high-end merchandise;
The issues I remember were from the late 50’s - early 60’s:
Its logo prominently featured a large diamond (maybe blue);
The catalog was hardcover.
One thing I vividly remember that it sold was a kids gasoline powered car. Not a go-kart - this was a miniaturized automobile that kids could drive! Boy, how I wanted one!
Don’t know if it’s the same catalog you have in mind, but this little emporium has a lot of high-end stuff, including (at least in years past) miniature cars for kids: http://www.neimanmarcus.com/
Apparently so,
But they seem to have gone from general merchandise sales to employee gifts and incentives - think “20 years employment anniversary” kind of stuff.