4-prong vs 6-prong for a round brilliant: I researched this for 3 weeks and talked to 4 bench jewelers. Here is the definitive answer.
This debate comes up constantly and the advice is contradictory. I did the actual research. I spoke with four working bench jewelers — not salespeople, actual goldsmiths who set stones daily. I asked the same questions to each. 4-PRONG SETTING • Shows more diamond: 4 prongs cover less of the girdle, meaning more of the stone face-up is visible • Appears larger: same carat weight, marginally more visible stone • More contemporary look: cleaner, more minimal aesthetic • Risk: if one prong fails or catches and bends, the stone has only 3 points of contact — can loosen or come out • All 4 bench jewelers said: "With quality prong work and regular inspections, 4-prong is completely fine." 6-PRONG SETTING • More stone coverage: slight visual reduction in face-up appearance • More traditional look: the classic Tiffany-style solitaire is 6-prong • Redundancy: if one prong is damaged, 5 remain — stone does not loosen • Easier re-tipping: more material to work with during maintenance • All 4 jewelers said: "More forgiving for active lifestyles or buyers who will skip inspections." The honest conclusion from the goldsmiths: "With proper prong work and an annual inspection, 4-prong is as secure as 6-prong in daily wear. The difference matters more for buyers who will not maintain the ring." My choice: 4-prong. The look is cleaner, the stone shows more, and I have a reminder set for inspection every 12 months. If you are hard on your hands (chef, nurse, gym daily, manual work): 6-prong gives you a meaningful safety margin.

