I wear a .85ct custom sliding bezel necklace as my everyday necklace. It was made by David Klass Jewelry in LA, who are very reputable and reasonably priced. Mine is 18” long with stations at 16” and 17”, which helps with layering or changing up the look. By itself for everyday I usually wear it at 16” and for more formal looks, I tend wear it at 18”. It does a good job of staying centered and not flipping. I researched extensively on fixed vs. sliding bezel and found that the general consensus is sliding stays centered better than fixed. Good luck with your project!