A quarter-carat lab-grown diamond solitaire set in 18K yellow gold over sterling silver on an 18-inch chain - the necklace that works for every occasion precisely because it makes no demands. This is the piece that sits at the collarbone and quietly elevates everything above it. G-H color SI clarity means the diamond reads clearly and brightly at this intimate scale. The yellow gold setting gives the colorless stone a warmth it would not have in white metal. A solitaire diamond necklace is one of those pieces that jewelry wardrobes tend to reach for most often - this one delivers that utility at an accessible price with real gemological quality.