Modern rings can feel personal, not rule-bound. Compare lab-grown diamonds,...

https://www.active-bookmarks.win/a-modern-engagement-ring-is-less-about-rules-and-more-about-what-feels-like

Modern rings can feel personal, not rule-bound. Compare lab-grown diamonds, colored sapphires, and east-west settings, then weigh recycled gold and a 20–25-character engraving