Keywords in site maps. Can there be too many? Can they be considered to be stuffed?

[TheJewelleryEd]

Hi everyone,
I'd appreciate some insight on a keyword stuffed site map I've seen on a site similar to ours (we don't have this kind of menu ourselves).
https://www.1stdibs.com/sitemap/jewelry/stone/pink-diamond/
This is accessed from a site map. Do you think it's too blatant / keyword stuffed? I haven't done this with our site, but am interested to see a big reputable site doing something so clearly just for SEO.
Would it work? Or would search engines dislike it? I'd really appreciate your thoughts.
Thank you.

[Andy.Drinkwater]

What you have there is a perfect example of a doorway page and absolutely against Google TOS. Give it time and Google will do something about it.

I would strongly advise against this practice.

-Andy

[TheJewelleryEd]

Thank you for your response. My gut feel at seeing the page on this site was along these lines, so it's good to see the official line from Google. I wonder how long it will be before search engines pick up on this.
Thanks,
Joss

[Andy.Drinkwater]

Hi Joss,

It's difficult to know how often the doorway algorithm runs, but I suspect that when they get round to it, there will be a penalty.

-Andy