Minimalist settings with clean lines and geometric frames best showcase octagonal aquamarines. Art Deco and architectural-inspired designs complement the stone’s precise angles, while platinum or white gold settings enhance its natural blue color. Halo designs with small diamonds emphasize the geometric precision while adding brilliance. For high-value octagonal aquamarines, custom designs that incorporate complementary angular elements create cohesive pieces that highlight the stone’s unique cut and aesthetic appeal without overwhelming its natural beauty.