A women's ring. Design a high-end, minimalist yellow-gold solitaire ring using ONE specific diamond: a 1.90 carat laboratory-grown marquise diamond, E color, VS2 clarity, measuring exactly 12.81 × 6.39 × 4.11 mm. The marquise must be oriented EAST–WEST (horizontal across the finger), never north–south. Preserve the long, narrow proportions of a 12.81 × 6.39 mm marquise. Do not change the diamond shape, proportions, or size. Mount it on a very thin, approximately 2 mm flat yellow-gold band intended for everyday wear. Create a low-profile floating/open setting: the diamond should visually appear to hover just above the band, with the minimum amount of visible metal possible. Use delicate structural support underneath the stone and/or extremely fine gold rails/partial half-bezel contacts at the marquise's sides. The support must be physically connected to the band and capable of being fabricated by a professional jeweler. The diamond should remain the overwhelming visual focus. No halo, no accent diamonds, no pavé, no decorative shoulders, no large basket, no bulky prongs, no cathedral arches, and no ornate bridal styling. The band should remain a clean, continuous 2 mm flat yellow-gold solitaire band. Important: This ring is being designed as one of four independent solitaire rings that may eventually be worn in interchangeable two-ring stacks. Therefore, keep the setting narrow laterally, smooth, and stack-friendly, with no protruding notches, puzzle-piece mechanisms, locking hardware, or wide metal blocks extending beside the diamond. The finished ring should look like contemporary independent fine jewelry / architectural minimalism, not a conventional engagement ring. Show the ring from: 1. straight-on top view, 2. three-quarter view, 3. side profile showing the actual elevation and structural connection between the diamond and the 2 mm band. Do not add, remove, substitute, rotate, or reinterpret the diamond. There must be exactly ONE horizontal marquise diamond. “The diamond should visually appear to hover just above the band, but the support must be physically connected to the band and capable of being fabricated by a professional jeweler.” And for this particular stone, I'd start with the open/rail version rather than a full bezel. The 12.81 mm length is the star; enclosing too much of it in gold will make the stone look smaller.