1970s 4 Carats Emerald Diamond Channel Set Dome Cocktail Ring 18K Yellow Gold

Seventy-one vivid square-cut emeralds and thirty-four round brilliant diamonds alternate in precisely channel-set rows across a smooth, domed 18K gold face — green and white, green and white, the pattern repeating across the full curve of the dome like a perfectly executed piece of jewelry architecture. From the side, it's a flawless golden hemisphere. From the top, it's a mosaic of color and light that photographs can barely do justice.