Here's manga covers similar to your description--a cute, naked guy covered in jewelry, sitting on a man's lap. Is it one of these?
https://s-media-cache-ak0.pinimg.com/236x/59/9d/80/599d8049fb423d1cb1568d9f5dda0aad.jpg
http://i3.mangapicgallery.com/r/coverlink/rROHYUm8aBnzo-L7jmKxeVpVAcPItlyo_7uFcU_twRCXnD7oAOrXveDYSOtYKV2avI0mCnM.jpg
First one: http://www.mangago.me/read-manga/you_re_my_loveprize_in_viewfinder/
Second: http://www.mangago.me/read-manga/taiyou_no_kikoushi/
http://www.mangago.me/read-manga/dakishimetemo_okorimasenka/mf/v01/c000/
here is the pic..Thanks
Actually maybe it's this:
http://www.mangago.me/read-manga/urimasu/
Theres a yaoi manga that im curious about the story i found the cover as a part of one the manga Ive read, The cover Looks like this 1 guy sitting in a chair in a suite with wine in his hand then on his lap theres this cute NAKED!!! guy hahah :) w/ only Jewelry all over his body... that got me curious about the story anybody Knows please tell....Thank you!!!