There is a kind of necklace that does not shout. It does not cascade, does not catch the light in one great burst, does not demand a ballroom. Instead it lays a single thread of green along the collarbone, quiet as a river, and lets the stone do what emerald has always done: hold the eye without raising its voice. This is the color-by-the-yard pendant, a style born in the 1970s and still worn today...
