When it comes to our everyday, go-to jewelry, the diamond solitaire just seems unimaginative. And the understated diamond tennis bracelet or pearl earrings feel like things of the past. Today, the pieces that are such a part of us that we hardly ever take them off — whether we’re in jeans and a T-shirt or out on the town — have become accessories of self-expression. Whether she spends a little or a lot, the modern woman wants something that’s subtle enough to wear every day yet imbued with attitude.