I’m trying to work with Artigem right now to replace my engagement diamond to my three-stone ring. My rep has found about three diamonds over the course of over two months. I find I have to email to hear from her. She’s found reasonable diamonds at prices comparable to mine but their vendors will not show a live or real photo. The virtual pics they send show big time yellow in color K. My color K didn’t show yellow with the naked eye and these diamonds might not as well but there’s no way to verify! Seems a bit unscrupulous to not be able to approve a diamond you can’t see.