Coltrane, a jazz virtuoso who devoted much of her life to a spiritual journey, is a beacon for today’s artists. An exhibition at the Hammer Museum shows why. By Siddhartha Mitter A jury found ...

Just as a dollar is divided into 100 pennies, a carat is divided into 100 points. For example, a 50-point diamond weighs 0.50 carats. But two diamonds of equal weight can have very different values ...