Harper Knife Edge | RoundClassic Six Prong Solitaire Engagement Ring with Knife Edge If less is more, Harper is the most. Our best selling minimalist engagement ring features a round brilliant cut diamond set in six claw prongs for added security and a classic, balanced look. The sculpted knife edge band creates a sleek, architectural silhouette, while the high polish finish draws focus to the center stone. Designed with a low profile setting and flush stacking fit, Harper is