When shopping for a diamond, whether for an engagement ring or a piece of fine jewelry, you’ll quickly encounter the term Four Cs—Cut, Color, Clarity, and Carat Weight. These four ...

sales of SI1 clarity stones increased 1%, SI2 fell 11% and I1 declined by 14%. The average price of jewelry across all product categories rose 2.7% to $2,360, reported the NDC. On the GIA (Gemological ...